Command a Rag Tag fleet of Grimalkin Vessels against the evil from Beyond. Lead your Grimalkins to Victory or Suffer Ultimate Defeat and lose earth to the greatest evil known to Grimalkin-kind the Evil Ancient Space Faring Empire.
All Reviews:
1 user reviews - Need more user reviews to generate a score
Release Date:
Jan 10, 2020

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:

Why Early Access?

“We've developed this title over the last few months and are at a great point for introducing it to the public and getting feedback. We like where we are, but we have a lot more we want to add to the game and getting early feedback will help us tremendously with doing so.

We want to make a game our players truly enjoy and early access is a great way for small dev teams like ours to get player input. We do our own testing as we are able, but no matter the size of the test team the players will always be able to find things we never thought of. We respect that and want to use that for mutual benefit of making better games!”

Approximately how long will this game be in Early Access?

“With our current planned features we expect about a year.”

How is the full version planned to differ from the Early Access version?

“We have the majority of the core mechanics in place and the game is very much in a playable state. We have several ideas for how to increase the depth of the puzzle mechanics, RTS control refinement, unit commands, UI improvements, and statistics and Steam achievements.

We plan to improve the visuals of the game to enhance the theme and refine the aesthetics to improve the experience as well.”

What is the current state of the Early Access version?

“The game is great and it's a blast to play. We're in Alpha, but it's exciting when you're playing a game you've worked on for months and forget everything else because you're having a blast.

Existing features include:
  • Hero Selection System
  • RTS Units
  • Command structure
  • Resource gathering
  • Research tree
  • Weapon loadout
  • Retreat system
  • Enemy AI
  • Enemy fleet system
  • Boss encounter
  • End score
  • Hero Commander

Will the game be priced differently during and after Early Access?

“Yes, we want to get players involved early, so there will be a discount until we leave early access.”

How are you planning on involving the Community in your development process?

“We have a discord and we track and squash bugs using a management system. We would love to have user bug reports and gameplay feedback.

Eventually, we want to add an in game bug report to make it easier for players to send them to us.”
Read more

Buy Grimalkin: Solar Defense Force

See all discussions

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

About This Game


Grimalkin Solar Defense Force is a game about planning each tactical retreat and achieving victory against overwhelming odds as the Evil Ancient Space Faring Empire Decimates your forces. The game is set 6000 years into the future and an Evil Ancient Space Faring Empire that seeks to reclaim their ancient home world from the Mutated House Cats turned a Sentient Space Faring 80's Retro Race known as Grimalkins who happen upon them at the Edge of the Sol System. Grimalkins fought bravely against the initial wave but what remained of Admiral Fluffy Duffy's fleet is Unknown. All that stands between earth and utter destruction is the Grimalkin Solar Defense Force and their nigh impervious Hyper Field Barriers. As the sole commander of the Grimalkin Defense Force you are tasked with preparing the Hyper Field Defenses, its fleet, and prevent the Evil Ancient Space Faring Empire from reaching Earth.

Do you have what it takes to lead space faring house cats against the Evil Ancient Space Faring Empire?!


  • You as the player start off with nothing but scarce resources a portal and a brave Grimalkin Commander at your side.
  • Build Orbital Space Stations to boost your fleet and defenses.
  • Mine Resources from ore , H3 fuel, to enemy Knowledge.
  • Research new Tech Tiers to improve your fleets fighting capabilities.
  • Test the enemy for weakness with each loadout of your fleet.
  • Every ship matters, and losing just one could mean your utter destruction. Retreat when all seems lost and save your fleet to help you withstand the overwhelming odds against you.
  • Use your Commander in Battle to aid you in the fight but be careful not to lose the brave soul as he/she is your only hope to win the day; if lost all is lost.
  • Tactically plan your forces to out maneuver the enemy; using superior tactics will help you gain the knowledge and skill to increase your overall chance of survival as well as your overall statistics.

Grimalkin Solar Defense is a Rogue Like RTS game. As a player you’re tasked with improving your fleet and figuring out what best configuration can beat the enemy’s defenses. They call themselves the Evil Ancient Space Faring Empire; whatever that means. Figuring out their alien weaponry will help lead you to victory as you fight your way back to Earth. Face Overwhelming odds and challenges throughout the game. Be prepared to lose and retreat often as the enemy is unrelenting in their war against the Grimalkin forces. Each Planet Lost is a chance lost, Hold the enemy as much as possible and plan your fights with the intent to save as many of your precious ships as possible. Every ship lost hurts so try to keep your fleet alive for the next engagement.

System Requirements

    • OS: Windows 7 or Higher
    • Processor: 2.6 GHz Dual Core or higher
    • Memory: 8 GB RAM
    • Graphics: GeForce GTX 500 series or higher
    • DirectX: Version 11
    • Storage: 2 GB available space
    • OS: Windows 7 or Higher
    • Processor: I7
    • Memory: 16 GB RAM
    • Graphics: GeForce GTX 700 series or higher
    • DirectX: Version 11
    • Storage: 2 GB available space

What Curators Say

1 Curator has reviewed this product. Click here to see them.

Customer reviews

Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Filter reviews by the user's playtime when the review was written:

No minimum to No maximum
Display As:
Show graph
Hide graph
Excluding Off-topic Review Activity
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...