Take command of your mercenary forces in Atom Zombie Smasher. The zombie apocalypse is upon us and it's up to you to evacuate everyone before they fall prey to the undead. Conduct massive rescue operations with a helping hand from snipers, artillery crews, orbital bombardments, and more. Experience the tactical richness of fully-destructible environments and procedurally-generated campaigns. And when the apocalypse ends, create your own game mods and share them with the Online File Share.
Now this is a gema that should have a higher price! I bought it with Humble Indie Bundle but this game worth the price all alone. I could play it a hundred times more and I still would be satisfied.
The graphics detail is just as it need to be. Sound is ok. Humor is not the best, but it's better than be serious. Controls are easy. The whole game is intuitive and strategy frendly.
I can't say any downsides sorry...