Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
User reviews: Overwhelmingly Positive (551 reviews)
Release Date: Mar 6, 2014

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Recommended By Curators

"Great game, able to sink hours on hours into. Play the game or play your own way by customizing levels to your liking. Challenging at times but very fun"
Read the full review here.

Recent updates View all (24)

April 24

Expansion DLC is Released

The expansion DLC is out! Here are the patch notes:


  • New ability menu with 7 commander powers
  • Mutator structure poses strategic dilemmas
  • Hive crawler alien in Ironman and Hunt missions
  • Extra-challenging Ironman skirmish mode and weekly challenge
  • Campaign integration for abilities and hunt missions


  • Commander powers can be used by everyone in weekly challenges
  • Mutator structures appear for everyone in weekly challenges
  • Revised Tension mission to be easier
  • Added patrol command
  • Made life support shared damage affect shielded marines
  • Tweaked costs of several items
  • Made minigunner more vulnerable
  • Changed ammo supply not to drop as much ammo
  • Fixed bug with infested turrets that was making them useless
  • Halved fire rate of infested turrets (compared to marine turrets)


  • Made mimic eggs slightly more vulnerable to grenades
  • Made infested marines higher priority targets
  • Made medi-pods higher priority targets
  • Reduced infested officer inspiration duration
  • Improved target selection for burrowing hive
  • Made spore mines unable to respawn if hive is damaged
  • Increased respawn time of spore mines
  • Reduced damage of spore mines
  • Buffed Assassins mutation with infested snipers
  • Removed Assassins mutation from easier difficulties
  • Made minigunners less effective against barriers
  • Added speed and armour bonus to inspired flamers
  • Made respawn happen even at points with dead bunkers
  • Changed AI and infested marines not to switch targets if they already have an important one


  • Added game option to hide idle unit alerts
  • Added game option to reduce size of announcements
  • Added visual indicator for which marine will be tasked with building
  • Added tips to important entities
  • Made all random missions point to marine spawn at the start
  • Added tooltips to custom level menu
  • Removed "Command Cancelled" message for chained commands
  • Added double-click "by type" marine selection
  • Added shadow to tech station icon to help recognition
  • Added ammo number to the UI


  • Stopped marines from getting stuck as much
  • Fixed campaign mission UI on extremely wide resolutions
  • Fixed crash issue that happened if switching resolutions during a game
  • Fixed UI issue with ammo upgrade and switching resolutions
  • Fixed date display issue for daily challenge at end of year (if week # warps over)
  • Removed OpenAL32.dll from game folder. Steam should install its own version
  • Optimised bug swarming slightly
  • Fixed bug with guardian mouse-over

4 comments Read more

March 18

Infested Planet DLC is Coming

The game is about to get a new mini-expansion: "The Trickster's Arsenal". The details of what's inside are still being worked on, but I can announce some new combat abilities.

The DLC is going to add 7 new powers, kind of like the chopper strike, but with different effects. For example, one ability is STASIS FIELD - you can fire it at a hive and freeze everything in the area. The hive can't take damage, but it also can't do anything to you. Good for splitting up enemies. Another one is OVERDOSE - you lose some health, but your marines go into a frenzy.

The abilities allow you to fight in new ways, like teleporting across the map to deal with an emergency.

At least some parts of the DLC will be free to everyone who owns the game. For example, I didn't want to split the leaderboards between DLC and non-DLC, so the new abilities are unlocked for everyone if you're playing a leaderboard map.

The Trickster's Arsenal is coming out on April 24th.

10 comments Read more


"Alex Vostrov has created the most fiendishly clever, creatively generous, and cinematically thrilling facing-down-the-alien-hordes real time strategy game this side of the original Starcraft! Who says a great RTS has to be a big budget studio endeavor?"
--Tom Chick, Quarter To Three

"Infested Planet is a game I’m excited to see evolve, as it has the potential to be a unique and engaging RTS unlike any I have played before."
--Nightmare Mode

"Infested Planet is already quite fun, and the current beta is being very actively expanded, refined and tuned. If you’re into strategy, this might well be worth keeping an eye on. After all, who knows what it could mutate into?" --DIY Gamer

"The mutations are an ingenious way to mix each game up and keep the experience fresh."

About This Game

Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

The enemy is closing in around you. Your soldiers are being flanked and the perimeter is slowly collapsing under a vicious alien assault. Robotic turrets will not last much longer. Just a little more and the bugs will swarm into your unprotected base. What are your orders?

You order your soldiers to fall back to a defensive chokepoint and rebuild your defenses. Sacrifice the forward squads to gain some extra time. Gather your team while equipping them with flamethrowers and laser guns. Start building a siege cannon for fire support. Then, while the aliens are busy, flank their main hives to destroy and capture them.

You have just pulled off a tactical victory - but there's no time to rest.

The aliens are constantly mutating. One moment your shotguns are ripping through the horde, the next the aliens grow hard, bullet-proof armour. You must adapt as well. Equip your team with stealth suits, miniguns, grenade launchers - your commands will decide the battle's outcome.


  • Real time tactical combat
  • A lengthy campaign where you develop new weapons
  • Procedural maps and random mutation system keep the game fresh
  • 21 Human weapons and buildings for you to wield
  • 33 Alien mutations to keep you on your toes
  • Fight thousands of enemies at once

System Requirements

Mac OS X
    • OS:Windows XP or later
    • Processor:2.2 GHz
    • Memory:1 GB RAM
    • Graphics:256MB OpenGL 2.1 Compartible
    • Hard Drive:300 MB HD space
    • Processor:2.4 GHz Quad Core
    • Memory:4 GB RAM
    • Graphics:1024MB OpenGL 2.1 Compartible
    • OS:Mac OS X 10.6 or above
    • Processor:2.2 GHz
    • Memory:1 GB RAM
    • Graphics:256MB OpenGL 2.1 Compartible
    • Hard Drive:300 MB HD space
Helpful customer reviews
153 of 156 people (98%) found this review helpful
5 people found this review funny
25.9 hrs on record
Posted: November 3, 2014
I liked infested planet. I bought the game on a bit of a whim when it was on sale, and it had been sitting in my gift inventory. All I really knew about it was that you ordered people around and they shot aliens. Which sounds like a hell of a lot of fun, really.

And it is.

The basic premise of the levels is that you start with a single capture point, and you must destroy the alien hives which sit atop their own capture points, until you control the map. With each point you capture you get more resources (called Build Points) and the alien army 'mutates' and creates an additional complication that you must overcome.

The game plays at a great pace. It's always tense, and yet, when you take a step back, the gameplay actually evolves slowly. You'll often find yourself wondering if you really need to drop a turret to cover an alien attack, or if you could just spare a single marine and spend the resources for the turret elsewhere, and all the while the lines of battle are being pushed and pulled. It's a great feeling.

And those choices. Those options! There are so many different things you can do. There are three main 'classes' of upgrades you can spend points on: weapons for your soldiers, localised power buildings like turrets or healing crates, or global upgrades that can do all manner of things from giving your soldiers grenades to having reinforcements dropped in by helicopter mid-fight. The best thing of all? They're practically all valid courses of play. Everything feels balanced and nice.

I mean look; there's a building that summons robotic clones of your soldiers when they die that fight on for a while. This means that yes: suicide missions are possible. And sometimes they are even optimum. If you -need- to capture that next point before the next attack wave comes in, and you don't have enough points for something to siege with, then an all out infantry rush might just do the trick.

Then there's the opponent. The alien swarm controlled by the AI. Here's another thing that's been done really well. While I was playing I got the distinct impression that behind the alien swarm was another player. Or at least another thing playing its own game. It had different rules to me, but it had to abide by them nonetheless. Each mutation the aliens choose have a profound impact on your play and options. You might be happily shotgunning the swarm one moment, but with the next capture suddenly the alien has consolidated its power into pseudo-human guardians, and you need to swap out your cheep shotguns for expensive sniper rifles. At higher difficulties the AI even counter-picks you. For example, if you invest in a lot of personnel upgrades, the aliens will send clones of them. I hope you know how to deal with the very same minigunners that you had waltzing right back towards your bunkers!

The game doesn't look the prettiest, and the sounds are okay, but what it does well is the gameplay, and it does that amazingly.

So now we have to ask. Do I think this is worth 15$? For myself? Surely. For anyone on the fence, I can say with certainty that it is worth your time and your money.
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28 of 29 people (97%) found this review helpful
1 person found this review funny
138.1 hrs on record
Posted: November 13, 2014
A simple, challenging game. I have some stability issues, it tends to crash after a few hours, but other than that it's great. I keep coming back to it because it's a good choice to waste 30 minutes of time, and it's so simple that you dont have to spend any time relearning the game. As others have noted, the random nature of the levels and enemy upgrades can sometimes make a particular level nearly impossible to complete, but if you surrender you get to keep all the single-mission upgrades you purchased, and you get cash for all the swarm you have killed so far, so when you try again you are in a better position to win.
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18 of 19 people (95%) found this review helpful
1 person found this review funny
14.0 hrs on record
Posted: October 29, 2014
I’ll keep this brief…”Infested Planet”, in my opinion, is a must-buy. It offers so much for its fifteen dollar price tag (as of 3/7/14). The skirmish mode and the customization options available gives the game almost unlimited replay value. I can safely say that it will keep strategists like myself busy for months, even years to come. Do yourself a favor and pick this little gem up…you won’t be sorry. I’ll go as far as to say that “Infested Planet” is probably my favorite game since “FTL”, which is saying a lot. Excellent, excellent game.
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19 of 21 people (90%) found this review helpful
1 person found this review funny
20.1 hrs on record
Posted: October 28, 2014
This game is difficult, youll be stretched thin trying to figure out where to place troops so that the aliens dont overrun one front while pushing on another and praying the retaliation isnt too strong. Depth overall is pretty low but it is really well polished and balancing troop types/buildings to gain an advantage against the waves of aliens is very addicting. At $15 its a high price but overall id say its worth it.

I keep coming back to the game because its great for jumping in, playing a few rounds and moving on.
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10 of 11 people (91%) found this review helpful
1 person found this review funny
11.7 hrs on record
Posted: November 25, 2014
Great game. It's very cheap too, which really helps in my decision to buy.

With graphics, it's got a very nice visual style and the game still looks great ultra-zoomed in.

Gameplay is nice, however it is a bit repetitive. This is no problem for me at all, I like the repetitive nature of the game and there is a lot of upgrades and buildings/weapons to try and shake it up.

The game has you as a commander of a marine team facing huge hordes of thousands of aliens, and the gameplay really stands out as unique with the gradual progression of fighting back against the alien horde.

You can always try out the free game 'Attack of the Paper Zombies' made by the same devs quite a while before this game to see what this game is like. 'Creeper World 3: Arc Eternal' is also a nice similar game.
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10 of 11 people (91%) found this review helpful
2 people found this review funny
22.8 hrs on record
Posted: February 25
Infested Planet is a mix between StarCraft and Starship Troopers.

I will start with the negative points first:
The difficulty can be quite extreme in the later levels. Despite a very flexible gameplay system and some good level ideas or even some maps that are randomly generated, overall the game can end up feeling repetitive if played in long sessions. The art style goes from excellent to just ok.

Now for the rest. Infested Planet plays like a tactical game, or a light RTS (Real-time Strategy). The base construction is minimal, as there is no resource harvesting and there are no factories. The buildings just provide defense or a specific bonus. They are definitively not at the center of the game.
However the distribution of the bases are an important factor of the game. Each base is actually a capture point that can belong to either the player or the Aliens according to who takes it. In general, the player starts with one point and will have to battle through the map and capture each point.

Each Alien base produces a continuous swarm of creatures that attack the player's positions (and despite some minor pathfinding issues, the AI is not stupid and can change course to attack undefended point). The player then has to manage the defense against the flow of Aliens, and the offense to capture points. Capturing a point has two effects that allow the game its sense of progression: some building points are awarded to the player in order to upgrade their army, and the Aliens benefit from a new mutation (new enemy type, new defenses, new hives) that increases the difficulty. Towards the end of the map, the Aliens are very powerful but the player has a wide range of options to deal with them and adapt to the mutation.

Adaptation is an important word to describe this game. First, because there are a lot of options available to the player. Different kind of weapons for the Marines to equip (Minigun, Flamethrower), or different buildings (turrets, airstrike, bonuses for the Marines or buildings). And even if it is more gamey than realistic, at any given point it is possible to remove one of these options to retrieve back all the building points that it costs and change strategy on the fly. This is really GREAT and it allows to experiment without being stuck in a specific technological branch, and to react better to situations (however, some bonuses feel lackluster in comparison to others and thus the cost of entry is not worth investing). Since I am praising this gameplay idea, I also think that the UI (User Interface) and gameplay and level design are all based on the RTS formula but with some nice and subtle improvement touches.
An example would be the dreaded escort mission that plagues most RTS games. Except that here, if the escort dies, it just respawns and tries again. Thus the escort feels like an additional firepower help until the map is safe enough to navigate it, instead of being a burden!

What I like with this game is its adaptability, its polished touches that are delightful surprises, and its sense of progression and pace. Every little step won or lost to the Alien swarms can be felt by the player, and there are very tense moments. And then the overwhelming scary swarm can suddenly be overturned into a jubilating victory, until a new mutation tips the balance of power.

Really a unique and interesting game that shows that RTS games can offer more than we think if they are well thought-of and if the developers are not afraid to make changes in the classic formula.
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74 of 130 people (57%) found this review helpful
3 people found this review funny
15.9 hrs on record
Posted: November 10, 2014
Concept: 10 / 10
AI / controls: 6.5 / 10
Mission design: 0 / 10

The core mechanics of this game are good. The early stages are fun, and the shop system makes you want to keep coming back. The targeting AI for your marines is meh, but not bad enough to ruin the game. The first half of the story missions are of acceptable quality.

The second half of the game is a complete mess. Later missions contain game-ending events, and unless you take an extremely specific set of precautions, you're dead. The only way to beat some of these stages is to play them over and over until you learn the stage in advance, and specifically play to avoid the pitfalls you know are coming.

The ambush mission is a great example. You simply spawn at the top of the map, and alien hives randomly appear around you. You have two directions to go, but one (securing the top of the map) isn't the "correct" way, and you'll die every time if you go there. If you try to defend your starting point (an extremely logical move), you will die because alien hives appear under you for the rest of the stage until you die. The "correct" answer to the stage is to fall back and let the aliens destroy everything as you retreat. If you attempt any other strategy, you'll die. There is no indication that this is the correct answer. And that's what makes it so infuriating.

If the level design wasn't so tremendously bad in the last half of the game, I could recommend. Right now though it's just a $15 pile of frustration that will last you about 20 hours, tops.
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9 of 11 people (82%) found this review helpful
1 person found this review funny
30.3 hrs on record
Posted: December 18, 2014
Haven't played an RTS in awhile. This ones good. You can average 30,000 kills a level, lol. Pure exterminating!
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8 of 10 people (80%) found this review helpful
1 person found this review funny
24.7 hrs on record
Posted: November 6, 2014
Excellent game, it has an interesting story and challenging gameplay. The graphics are simple but it doesn't detract at all from the experience. The mechanics are solid, easy to learn, and I didn't experience any bugs (other than the ones I was shooting. lol) Lots of replayability and you can even go through the campaign again after you beat it with all the stuff you unlocked. I highly recommend this game to anyone who likes strategy games and killing thousands of aliens.
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6 of 7 people (86%) found this review helpful
1 person found this review funny
80.5 hrs on record
Posted: February 26
A gun-toting, mass alien slaughterfest!
I'm a big fan of this game!

It's an action-packed top down RTS, with pause. The campaign doesn't get too weighed down with strategy and planning, instead focusing more on squad-based combat. Unlike other similar games, you won't spend the whole game waiting for building and research upgrade bars to finally reach 100% so that you can get on with the game. There are even inexpesive technologies that weaponise your bunkers, so you don't need to waste money on guards, or spend the whole game running back to re-capture defenseless capture points. That being said, there are certain times when strategy is necessary to win. You may need to think about how you put your group together, and which upgrades you give them to begin with, but after that it's just about blowing the hell outta alien scum!

You can purchase weapons and tech in whichever order you please, which gives you the option to prioritise upgrades to match your playstyle. You can even purchase single-mission bonuses such as an additional sniper at the start of the game. Levels give plenty of money to stay up-to-date with upgrades, but even if you're struggling earlier levels are usually quite effective to farm.

Some helpful tips:
  • Note the difference between a "single mission power-up" and a weapon/tech unlock.
  • Medpacs are very helpful for the first few missions, but pretty useless after that.
  • Weaponising your bunkers is incredibly useful.
  • The healing building is the most useful upgrade. (Combat is squad-based, you can't win without a good squad).
  • Don't forget to use the attack-towards function when moving (Default button: A + Right Click).

  • [ - ] Con's:
    My biggest problem with this game was that I couldn't find any way to manually select a specific bunker for my troops to respawn at.
    For example: When you lose a few troops while retreating, only to have one or two troops respawn at the other end of the map. You end up having to get them killed and hope that the aliens capture that spawn point while they are dead, so that they respawn at the right spot. -_-
    Admittedly, the graphics are a little lackluster.
    Level design barely changes from start to finish
    No difference in terrain. Eg. No "move slowly on this terrain" & no flanking bonus & no "less/more chance to hit" depending on whether you are on higher or lower ground.
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7 of 10 people (70%) found this review helpful
1 person found this review funny
10.4 hrs on record
Posted: January 12
Fantastic RTS , love the refund mechanic as you can adapt your stategy on the go without any penalty.
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3 of 3 people (100%) found this review helpful
1 person found this review funny
7.9 hrs on record
Posted: March 6
This game is straight awesome. Part Starcraft, part... well, Starcraft, but not the same.

It's got a TD feel to it, and you're always fighting Zerg-types, but there's enough variety in missions that it's not the same game over and over. Further, there's weekly challenges with leaderboards, at varying difficulties.

You generally lose a mission when you've lost all your bases (which can be upgraded as you do missions and earn cash), though some are timed, with bonus time awarded for reaching objectives, and more cash earned for longer games more slaughter... and though thousands upon thousands of aliens die per mission, it's quick and easy to learn, with a good tutorial and good interface options between click/hotkey to make both options usable within a couple of missions. Pay attention when Sarge tells you to get the shotguns, and use the hell out of them for the duration.

However, miniguns and flamers for win.

After you've played a few games you'll unlock new buildings/abilities/skills, which can be built/bought during missions, hence upgrades to your troops and bases. You can also re-run missions to gain Steam achieves with the new technology (hence the TD feel).

Again: miniguns and flamers for win.

Most of the tough spots I've found so far have been such that I can park a couple of guys next to my bases, which, after you unlock bunkers, will keep them healed while they blaze away, while you figure out what to do next... and some of the scenarios are challenging enough to warrant a wider view of the map and observation of the flow of enemies. Most non-starter scenarios have had bonus mission award (during-mission currency, used to buy upgrades for troops or buildings) options, so you have a choice sometimes between trying to zerg back at them for a fast win, or taking the long road and wading through thousands more bodies with heavier guns.

So like I said: miniguns and flamers for win... but officers help, too.

Fun game, for sure - good job, RocketBear!
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6 of 9 people (67%) found this review helpful
2 people found this review funny
9.8 hrs on record
Posted: February 18
Small high-quality game in genre "swarm control".
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1 of 1 people (100%) found this review helpful
1.2 hrs on record
Posted: April 24
All I need to say is; "I demand a co-op mode!!"

Excellent diamond in the rough, simple but addictive.
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1 of 1 people (100%) found this review helpful
2.7 hrs on record
Posted: April 24
I downloaded this game since it was on sale, saw that it had overwhelmingly positive reviews and decided to give it a try. Since the game and dlc pack was so cheap I went ahead and bought the game with the dlc it provided. I have to say that this game is worth it. This is my first review here on steam and it's because this game deserves it, it deserves to be prasied because of the awesome gameplay, it's simple yet amazing visuals. This game just blows my mind. I can't get enough of it. I highly recommend that people buy it. If you're reading this review just stop and buy the game because trust me it is worth every penny.
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2 of 3 people (67%) found this review helpful
1 person found this review funny
2.7 hrs on record
Posted: February 27
if you're anything like me you normally cant stand RTS games. this however, is not the usual RTS game. this is more about puzzle solving rather than base building. The gameplay mechanics are absolutely fantastic and make you feel like a god, as you push your men up and kill millions of little bug things. The story is fairly simple but it's engrossing enough to be enjoyable. the cons of this game are few and far between, but the main one is if you get stuck there isnt much you can do to advance, but this is overcome by the ability to play a different mission and get powerups that way. all in all its worth a buy for about 6-7 dollars if you can get it on sale, but i dont think its worth the full sale price as it stands.
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2 of 3 people (67%) found this review helpful
1 person found this review funny
9.3 hrs on record
Posted: February 25
There is something in this game for both hardcore and casual fans of rts games. Its the game I wanted while we were all waiting for SC2 to come out. Buy this, and then buy a couple copies for your friends.
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3 of 5 people (60%) found this review helpful
4 people found this review funny
6.0 hrs on record
Posted: March 1
K/D ratio of 30 657, a must play!
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8 of 15 people (53%) found this review helpful
1 person found this review funny
2.4 hrs on record
Posted: March 23
If you like difficult micro-management in RTS games this game is great. Otherwise I won't recommend it. You are knee deep in aliens and unless you plan very carefully after level 4 you'll get swarmed... over and over again. Definitely not a game for me.
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9 of 17 people (53%) found this review helpful
1 person found this review funny
7.0 hrs on record
Posted: February 1
I purchased this game late in the night, which may have been one of the reasons why I bought it in the first place. If you are thinking about buying this game late in the night, just wait until tomorrow morning and make your decision then. You are better off that way.

Longer review

I had the strong craving for a new strategy game and came across Infested Planet. Initially I was skeptical of the game, primarily due to the poor graphics, however I did not want to spend more than $20 tonight, read a few of the reviews and also looked at the gameplay... and thus I bought it.

The beginning of the game reminded me of some flashgames over at, only that I am not playing the game in the browser. I went along with and played a few of the missions, which were fairly easy until the levels substantially increased in difficulty. I don't dislike difficulty... unless that is the only thing that drives the entire game! Granted, you have some buffs and upgrades, but every mission is the same ♥♥♥♥ing thing. It's like playing skirmish, while increasing the difficulty of the AI every time you win. The story itself is rather uninteresting and after reading 2 of the messages, I just skipped through the rest of them, as they just became a nuisance.

Ultimately, I would only recommend this game to those who... screw it, I don't recommend it at all. If you are into RTS and strategy games, then I rather recommend spending 25$ more to purchase a copy of Wargame.
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