Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic arcade-style action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through four beautiful worlds, confronting countless of Mental's minions on his way to Mental's base.
User reviews:
Very Positive (15 reviews) - 93% of the 15 user reviews in the last 30 days are positive.
Very Positive (1,044 reviews) - 92% of the 1,044 user reviews for this game are positive.
Release Date: Apr 30, 2014

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

WARNING: This game is currently an Early Access beta. While most of the game is feature complete, please do not purchase it unless you want to actively support development of the game and are prepared to deal with serious issues and possible interruptions in game functioning.

This early access version of the game will give you the game on the improved engine: The First Encounter, The Second Encounter, and a limited number of new versus and survival levels.

Regular updates are planned with new levels and fixes of old levels based on user feedback.

When the early access testing ends, all levels will be available, including a brand new campaign exclusive to Serious Sam Classics: Revolution!

Please report all bugs on Alligator Pit bugreporter and leave feedback on the Steam forums!

NOTE: Serious Sam Classics & Revolution is a standalone product and it is completely free to those Steam users that already own both original Serious Sam Classic games on Steam.”
Read more

Buy Serious Sam Classics: Revolution


Recent updates View all (27)

June 25

Serious Sammy is here! (AP_3216 is now live)

As you all know, Sam has a sister. And her name is Sammy. She's decided to take a detour through Egypt this time around and visit the Revolution as a new playable model in the game!

It's summer! And you know what that means. That's right, extra protective wallets for the Steam summer sales. Revolution is on sale! Get it for yourself or your friends for 90% off!

  • Added the Serious Sammy player model!
  • Added a custom speed scalar to enemies in the editor.
  • Added a Destroyer enemy for modding.
  • Removed the libpng dependency, and added the ability to create textures from several more file formats.
  • Fixed not all crosshairs showing in the options.
  • Fixed Steam achievements and statistics not working most of the time since the last patch.
  • Fixed missing shadows in lava caves in Land of the Damned.
  • Fixed some issues with CCC, and added !ban command to CCC.
  • Fixed the time needed for the gold medal in Mental's Needle.
  • Fixed a crash when creating a new model in Serious Modeler.
  • Fixed some (old alpha) enemies giving negative scores.
  • Fixed Sam running around in circles in The Great Pyramid like a record baby round round round round
  • Fixed a bunch of other minor things, including crashes and silly mistakes in levels.

26 comments Read more

May 25

AP_3141 is now live!

It's that time again, ladies and gentlemen! Time for an update. But not just any update! An update with a lot of fixes and features.

We'd also like to tell you a little bit about ourselves. Who's Alligator Pit, really? What's changed since the last time we introduced ourselves to the community? Read more about it here, on our latest official blogpost!

Talking about community contributors, we'd also like to showcase our brand new achievement icons! Check them out on Steam! They were made by this guy, check out his other stuff!

Also, we created a brand new documentation website for information about dedicated servers, scripting, and more! Check it out at This documentation can be contributed to on Github as well, so feel free to submit any pull requests if you have anything to add.

  • Added a new mutator: Enemies Replacer. This randomly replaces enemies in any level with random special character types.
  • Added a Pitch property to SoundHolder entities.
  • Added a default dedicated server controller addon: the Combative Creature Cutter, also known as CCC. You can add admins, kick people, or invoke votekicks. (More documentation about this soon!)
  • Updated the Bromscript scripting engine.
  • Added new (old) variants of Elementals: Earth and Wind.
  • Added some more customization options to Grunt and Firecracker.
  • Fixed lasergun/tommygun slowdown bug.
  • Fixed windowed mode resolutions not always showing the right values in menu.
  • Fixed "Stats not saved: error 3".
  • Fixed stats for Ziggurrat never uploading to Steam leaderboards.
  • Fixed stats shown in menus always being singleplayer. This also shows deathmatch stats now!
  • Fixed stats not always saving correctly when playing multiplayer.
  • Fixed the way secondary fire, Netricsa, and Use controls were conflicting with each other. They are now all separate controls. This also avoids confusion.
  • Fixed a bunch of minor level issues.
  • Fixed a bunch of minor networking issues.
  • Fixed a bunch of minor graphical issues.
  • Fixed a bunch of crashes.
  • Fixed a few survival exploits.
  • Lots of internal code changes that will allow us to roll out fixes even faster!

20 comments Read more
See all discussions

Report bugs and leave feedback for this game on the discussion boards

About This Game

Serious Sam Classics: Revolution is a unified version of the Croteam's original Serious Sam Classic: The First Encounter and Serious Sam Classic: The Second Encounter experience, which is currently in development by Alligator Pit, an indie development team made of Serious Sam fans with the support of Croteam. Serious Sam Classics: Revolution, along with newly developed content by Alligator Pit, also includes all levels from both Classics and is powered by an updated Serious Engine 1 featuring all-new advanced graphics shader support, full 64-bit compatibility, full Steamworks integration, and lots of bug fixes for a superior game experience. Serious Sam Classics: Revolution is a standalone product and it is completely free to those Steam users that already own both original Serious Sam Classic games on Steam (Serious Sam Classic: The First Encounter and Serious Sam Classic: The Second Encounter).

Development team Alligator Pit is comprised of Angelo, Rakanishu, Bromvlieg, Solais and many other dedicated Serious Sam fans from around the world.

Serious Sam is a high-adrenaline old-school arcade-action shooter heavily focused on frantic arcade-style action. Serious Sam travels through the beautiful landscapes of Ancient Egypt, Mayan Civilization, Persian Empire and Medieval Europe, confronting the countless numbers of Mental's hordes hell-bent on destroying the human race. You are Sam "Serious" Stone. Welcome to the fight!

Key Features

During the development in the Early Access phase, you can enjoy the following features:
  • Steamworks - Fully integrated with Steam powered servers, game browser, achievements, leaderboards, and more!
  • Frantic Arcade-Style Action - Fight your way through nightmarish warriors in Mental's army, including old favorites like the Beheaded Kamikaze, Sirian Werebull, Kleer Skeleton and new forgotten baddies that somehow got lost in time. Battle it out with three of Mental's fiercest generals to save the day or die trying!
  • Various Environments and Secrets - Unleash mayhem in 4 spectacular locations: Ancient Egypt, Mayan Civilization, Persian Empire and Medieval Europe. Discover over 100 secrets spread throughout the battlefield!
  • Special Weapons and Power-Ups - Wreak havoc with a huge arsenal of weapons including the classics such as the Double Shotgun, Minigun, Sniper Rifle and Cannon! We also added the beloved Plasmagun and Minelayer from the Warped mod!
  • Co-Op Multiplayer - Embrace the chaos with up to 42 players! Play through the entire campaign with your closest friends or enemies!
  • Survival - Try your luck at the brand new Survival gamemode!
  • Versus Multiplayer - Drop the gauntlet and let the heavy ordinance fly in the classic Deathmatch and Scorematch, and when you've had enough of that, try out the all-new game modes unique to Revolution: Team Deathmatch, Capture-the-Flag, Control Zone and more!
  • Split Screen - Huddle up with up to 4-player local split screen co-op and versus modes!
  • Massive Updates - Fully updated engine with hundreds of bug fixes.
  • Full 64-bit Compatibility - Run on the latest versions of Windows with a fully working editor!
  • Advanced Shader Support - Write your own OpenGL shader programs and apply them in your levels!
  • Level Editor - Create your own levels, mods, textures and other content with the inclusion of the fully featured Serious Editor and the Serious Modeler!

Future Updates

With our regular updates during the Early Access phase, we will introduce the following updates over time:
  • A brand new campaign with new and exciting enemies, environments and a special ending boss!
  • Even more new and refined gamemodes!
  • Even moooooore achievements, and icons for them!
  • A fully featured scripting engine for advanced mod creation!
  • More OpenGL shader integration like post processing and more!
  • More versus maps and fixes to the current ones based on user feedback!
  • For modders, we'll be adding a set of tutorial maps to showcase the new features we've added to the engine!
  • Steam Trading Cards!

System Requirements

    • OS: Windows XP
    • Processor: AMD Athlon 650MHz or Pentium III 650MHz range processor
    • Memory: 256 MB RAM
    • Graphics: OpenGL 1.1 compliant
    • Storage: 2 GB available space
    • OS: Windows 7
    • Memory: 2 GB RAM
    • Graphics: OpenGL 3.0 compliant
    • Network: Broadband Internet connection
    • Storage: 2 GB available space
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Very Positive (15 reviews)
Very Positive (1,044 reviews)
Review Type

Purchase Type


Display As:

(what is this?)
446 reviews match the filters above ( Very Positive)
Most Helpful Reviews  In the past 30 days
8 of 8 people (100%) found this review helpful
1 person found this review funny
73.2 hrs on record
Early Access Review
Posted: October 1
This game is good. I have got all of the achievements in 73h of playtime.

I will do some pros and cons for the game.

-The game is a classic
-You can play in FPS or 3rdPS mode
-A lot of aliens to destroy
-Both TFE and TSE are included in this game
-Another campaign is in development called Bright Island
-When you buy Serious Sam Classics: Revolution, you get both Classic TFE and TSE games separately
-3 new weapons added to the game
-Not many bugs, nothing compared to some other games
-Graphics are the same as in both Classic Serious Sam's from '01 and '02
-The achievements aren't hard to get, just a couple of ones that need a lot of grinding

-The community is not big as it should be for Early Access games
-The Multiplayer is almost dead, but some servers can be found
-Stats aren't saved for TSE, I had addressed this issue in the Forum but I got no answer from the Devs so you have to pass the whole TSE in one run for a CO-OP achievement
-The Netcode is really terrible, worser then in original Classic Serious Sam games

I give 6/10 for this Early Access copy but I will do a whole new review when the full game is released.
Was this review helpful? Yes No Funny
1 of 2 people (50%) found this review helpful
1 person found this review funny
18.7 hrs on record
Early Access Review
Posted: October 15
A seriously good FPS to play in case your computer can't run DooM 2016 or Shadow Warrior 2.
Was this review helpful? Yes No Funny
Most Helpful Reviews  Overall
114 of 129 people (88%) found this review helpful
1 person found this review funny
1.3 hrs on record
Early Access Review
Posted: April 30, 2014
This is a long review so if you just want a brief summary of why I recommend Serious Sam Classics: Revolution then skip to Results and read from there.

Alligator Pit manufactures the original in all new light with dazzling new interface and cleaned up visuals. Serious Sam Classics: Revolution revitalizes the classic games taking on similar ideas as the HD remakes by creating a game with cleaner performance.

Serious Sam: Revolution includes the first and second encounters, which means instead of paying $34.00 for both the First and Second Encounter you can get them both for $9.99 (without being on sale). Although, what you are probably wondering is what else is included in Serious Sam Classics: Reovlution? To name a few better graphical options, steam support, new campaigns, new bosses, improved UI, level editors, and much more.

The First Encounter:
For those who already own the first encounter you should probably skip this. This campaign includes thirteen main story levels and two secret levels. All of the levels take place in Egypt and are about the story of how Serious Sam began his quest to save humanity from Metals domination. The original campaign offers hours of gameplay as the levels are incredibly large and filled with secrets. The levels are composed of fighting mass hordes of enemies, solving puzzles, and completing objectives. During the campaign you will fight three bosses: Highlander Aludran Reptiloid, Lava Golem, and Ugh-Zan III. The brilliant group fights and epic boss fights keep you on your toes constantly engaged in a changing environment.

The Second Encounter:
For those who already own the second encounter you should probably skip this. This campaign includes twelve levels (no secret levels), but it also includes the entire campaign from Serious Sam The First Encounter. The campaign is divided across three kingdoms: Mayans, Persia, and medieval Poland. Similar to the First Encounter the second encounter is incredibly long, the levels are large and filled with secrets. The Second Encounter creates even more puzzles, crazier secrets, and throws more enemies at you than imaginable. Not only will you be engaged in all the mysteries abound, but the campaign also provides four bosses: Kukulkan, The Wing God, Exotech Larva, Mordekai the Summoner, and The Ram-God. The Ram-God is from Legend of the Beast DLC, which I assume is going to be implemented into Serious Sam Classis: Revolution.

Bright Island:
I have no information on this campaign, as it is not available in the early access beta.

Space Crusader (Possible Additional Campaign):
This campaign will include the following levels: Water Planet, Lava Planet, Green Planet, Ice Planet, Tropic Planet, and Rock Planet. Although none of this is mentioned, there are hints that this is being implemented based on the screenshots. The screenshots show that they may finally implement the scrapped levels and weapons from the Original Serious Sam. One of the weapons in the screenshots is the Ghost Buster (it looks like it shoots electricity) which was never implemented in the original campaign. it looks like this weapon is being used on the Rock Planet, which is one of the many various planets that was never included in the Serious Sam Campaign. The original campaign would have been over double the size if they finished developing most of the levels they had planned, but for various reasons they were cut. This makes me hope that this edition is finally fulfilling the original dream for Serious Sam and bringing the campaign in its full glory.

Graphical Additions:
The actual quality of the textures is the same as you would see in the HD remakes, although what Serious Sam Classics: Revolution offers is more than just a HD texture experience. It provides modern day graphical elements including: lens flares, fog, object bending, object translucency, smoother particle animation, haze, high resolution reflections, better portal animations, cleaner lighting, higher shading controls, and more. You can see all of these in action by checking out the Technology Test, which provides you with clean visuals of how these will be seen when implemented into the new campaign.

Steam Functionality:
Finally Serious Sam will have access to the workshop, and proper steam servers. The game is supposed to offer up to 42-player multiplayer and even support split screen. The game will come with a level editor, so if they don’t come out with space crusader or sky city someone will. Review Update Serious Sam Classics Revolution has been out now for almost two-half weeks, since then there has been a bundle of added content to the workshop. These include remodeling of textures, multiplayer maps, and even a custom campaign. SSCR has a lot of to offer, and if the community support continues in this fashion this will be an amazing addition to the series.

At this current point Serious Sam Classic: Revolution is not complete, but lets be honest Croteam and Devlover Digital completed Serious Sam HD in a timely manner; I am sure that you will not be waiting forever, unlike some Early Access Games. This game has a lot of potential with its new graphics engine, level editor, providing the original campaigns, better menu UI, cleaner animations, steam support, and so much more. I would buy this game at full price, but on sale it’s like you are robbing Croteam.

+Great new OpenGL shaders and 64-bit support to create a much cleaner and graphic intensive game.
+Steam workshop support
+Steam servers for multiplayer (supports up to 42 players)
+Includes Serious Sam First and Second Encounter
+New Survival Mode
+Already mention of new Bright Island Campaign
+A level editor, so you can go crazy and make your own Serious Adventures
+Loads of enemies and bosses
+Lots of guns to choose from
+Already downloaded my first custom campaign, thanks Workshop support!

-Its early access
Was this review helpful? Yes No Funny
116 of 134 people (87%) found this review helpful
1 person found this review funny
46.7 hrs on record
Early Access Review
Posted: April 30, 2014
Game of my childhood... I am so glad that its back...
I recommend you guys to buy it since you got really good shooter for a nice price + it will be updated with new campaign, enemies and Trading Cards! Serious Sam is back to kick some asses.
Was this review helpful? Yes No Funny
64 of 81 people (79%) found this review helpful
39 people found this review funny
1.4 hrs on record
Early Access Review
Posted: December 26, 2014
I bought my childhood for 89 cents.

Was this review helpful? Yes No Funny
45 of 51 people (88%) found this review helpful
4 people found this review funny
7.2 hrs on record
Early Access Review
Posted: April 30, 2014
SSR is an enhanced re-release of both encounters of Serious Sam 1. This was done for numerous reasons, one of the biggest being how SS1's multiplayer servers were taken down by Gamespy.

SSR features a very large amount of levels, workshop support, 64 bit support and numerous other things. I could go into depth about what made Serious Sam great but fundamentally, you have to play it to see why.

The strengths of Serious Sam could easily be compared to games like Doom or Quake. In that it is the level design and enemy placement that makes it unique and stand out. Every enemy in Serious Sam by themselves are ♥♥♥♥ easy to kill. However when the level throws hundreds of them at you, you start noticing just how hard the game is. It is a very rewarding game, and truly one of the best examples of a "classic FPS"

Of course if you don't wanna play alone there's 16 player coop, and deathmatch. With the many varied levels of the first and second encounters, and the hundreds more due to arrive on the workshop. Serious Sam Revolution is one of the best ways to spend 10$ on Steam.

Or you could just buy SS Gold, you get it for free there. Jus' saying...
Was this review helpful? Yes No Funny
69 of 96 people (72%) found this review helpful
2 people found this review funny
191.0 hrs on record
Early Access Review
Posted: November 19, 2014
Strange situation. This game was released more than 6 months ago but she still has very main problems that were in the beginning. Developers focused on adding new content, application of new ideas, improving technical side (high resolution, controller support) but main gaming base remained unchanged.

I will not write anything about the balance of the game. He is the same as in HD Encounters. I have not noticed any changes. Only kleers and buls are moving a bit differently - they are harder to kill and they are more dangerous than HD.

Serious Sam Classics: Revolution have both Encounters. A few days ago was added new difficulty named "I am Ugh-Zan". The same us "Serious" difficulty but all enemies have 1,5x health and each enemy has two extra kinds of skins: Red and Green. Red skins can burn you, green slow you down. With 1,5x health of enemies you may have problems in rooms where hundreds of frogs or invasion of the bulls. This is not a problem when you have unlimited using F6 (quick save) and F9 (quick load).

Problems and bugs
1. Main problem for me - 1 ammo bag at co-op survival for all players. Its mean if first player will take the ammo bag - the second player will have to wait 30 seconds for respawn of new ammo bag. How play without ammo?! Yes game have places for even 42 players but possible to play only when you play solo at co-op. Even play with 1 friend - you can not play, nothing good will come.
2. Seems for achievement "I am Ugh-Zan" you do not need play all game at this difficulty, run only last level with "I am Ugh-Zan" difficulty, all other levels with tourist is enough. It means that its very easy achievement and anyone can get it without problems. It would be interesting if you need some skills and spend time for training if you are really want this achievement, like "all gold at survivals" TSE HD... Also they changed rules, 2x health were previously. It was much more serious. I am very disappointed, I will not set this achievement for my best.
3. Records at leaderboards.
» Firstly, we can`t check Steam profile of players from the game, we can see only their nicknames with results. Also no any filters for campaign results, just general score for full campaign.
» Secondly, developers did not fair to the players when they deleted many results from leaderboards. Because, now I can see same results which were made with the same scheme. 8+ hours at co-op survival where you can`t pause the game or play with any friends and 1+ hour at "Space ball" map are prove my words. Its obvious for me, why not obvious for developers?!
» Thirdly, no anti-cheat system at game. Still no one red hacked record at leaderboards. This simply can not be after 6 months.
4. During co-op survival match, any players can join to the game. They will not get a result but they can help a lot to the host.
5. Survival mode have 4 maps. "Space ball" have 2x gravity and you do not need to shoot enemies, just walk forward and look at the sky. So only 3 playable maps. I hope that will adds new maps.

1. At leaderboards you can see how much kills players got. Its important for survivals... But do not forget that some enemies have friendly fire. Blue golem like a boss. He will help to you a lot.
2. During any kind of co-op games, you can see what damage your teamates and you are gave to enemies... But not restarted after match, cumulative statistics. Need fix.
3. New weapons... But still no hotkeys for them.

Yes this game have not modern graphics, have many bugs and serious problems which have not completed yet after 6 months,
but cost very cheap and she is made not from Croteam and I got only positive emotions when I played this game. I'm not sorry that I bought it for my collection of Serious Sams. So lets try it too!

I will not give an assessment now since the game is definitely not completed. I hope that will full reset of leaderboards, will adding new content for Survival mode and adding Steam cards.

Good luck Scratch~!
Was this review helpful? Yes No Funny
37 of 46 people (80%) found this review helpful
12 people found this review funny
0.1 hrs on record
Early Access Review
Posted: December 31, 2015
Serious Sam: The First Encounter + Serious Sam: The Second Encounter + 1 Serious Sam fan made game?
Only 4,99?
Well that's a deal. Seriously.
Was this review helpful? Yes No Funny
78 of 115 people (68%) found this review helpful
0.1 hrs on record
Early Access Review
Posted: April 30, 2014
Because Sam, Serious Sam!

Nothing to dislike here..
Was this review helpful? Yes No Funny
31 of 38 people (82%) found this review helpful
15 people found this review funny
11.7 hrs on record
Early Access Review
Posted: December 14, 2014
Sam Stone is like a shark with guns – if he stops moving and fighting for even a moment, he drowns in a sea of furious enemies.
Was this review helpful? Yes No Funny
Recently Posted
baconprison (trading)
4.8 hrs
Early Access Review
Posted: October 20
This game is great (just like serious sam)
but....When the hell is bright island coming out?
Helpful? Yes No Funny
1.1 hrs
Early Access Review
Posted: October 18
its an awsome game
Helpful? Yes No Funny
12.4 hrs
Early Access Review
Posted: October 6
A great game, and an all time classic. Great graphics for it's age, and a fast paced gameplay, perfect for it's genere. A great mix between Doom and Duke Nukem, from wich it takes inspiration, no doubt. I recomend this game to anyone who likes First-Person Shooters, and great classics. Definitely not a waste of time. On the contrary, I think it's time well spent.
tl;dr: A great game that you should play.
Helpful? Yes No Funny
4.5 hrs
Early Access Review
Posted: October 5
Great addition to the serious sam classic series. As a serious sam veteran I Iove some of the new features like changeable hud and the r as the reload key. I am wetting myself in exitment for the new campaign and maps. A solid 8 out of ten for this current version. I am sure the future update will be a ten.
Helpful? Yes No Funny
Your Dad's Gay Lover
2.0 hrs
Early Access Review
Posted: September 21
Serious Sam, if you don't know by now, is a crazy FPS game where hundreds of monsters relentlessly try to kill you until you kill them. It's fun. Play it.
Helpful? Yes No Funny
[DFS] Turdomino
6.4 hrs
Early Access Review
Posted: September 20
For this Duke Nukem clone back in the day, Crotream really thinked big. Big Maps, Legions of enemies, lots of weapons, lots of fun.
Helpful? Yes No Funny
Lord Rump
23.9 hrs
Early Access Review
Posted: September 19
Product received for free
More updates would be nice.
Helpful? Yes No Funny
4x4 animal style
4.4 hrs
Early Access Review
Posted: September 11
Antonio "Carlos" Fallorina
Helpful? Yes No Funny