Wave defense with infinite scaling and lots of settings. Tower defense! Available in freeplay mode and as scenario.
Mods introducing new content into the game.
New ways to deal with enemies, be it attack or defense.
Can this also be made into a mod where you can buy the upgrades in regular games? Kinda gives an incentive to proactively hunt aliens.
should be possible, but i'd like to tune the scenario to perfection first