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.
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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?!
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.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.














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?!
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.
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.
We are not affiliated with IsThereAnyDeal.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.