The second game from Fireblade Software is a “Survival Defence” game, the player protecting cryogenically frozen humans from aliens boarding their spaceship.
It has fast retro-FPS gunplay with tower defence style turret and trap placement. The environment can be utilised by shutting off gravity, closing blast doors and much more, all actions with consequences in future missions.
Struggling against the horde in an increasingly damaged vessel, failure is inevitable. But with experience transferred to subsequent runs, you can purchase better starting ships, defences and upgrades. Victory is built upon the fallen.
The game can be played singleplayer or online co-op, featuring extensive modding support.