We have just released a new topdown shooter on Steam! Your task is to defend the air force base against two million invading enemies, and survive as long as you can. The game includes a high score list, a survival mode with advancing waves and different types of invading foes. 'Area 51 Defense' is currently in Early Access and we're developing it as we go along.
I have built the game on the older 'Hordelands' code base, and given it some modifications. I'm still in progress of porting the game to mobile.
Go ahead and give it a spin:
> Area 51 Defense on Steam