Undead Vs. Plants might be the most horrifying game I’ve seen on Steam, and as of this week you can’t buy it anymore as the developer has pulled it from sale. On a functional level it’s a ricochet game and might provide for a challenging puzzle game. On the other hand the characters in this game look like the last things I will see when I die and am dragged to hell by the demons of my past.
You play as zombie Arnold using your bullet ricochet powers to kill plants. The plants in the game are just the right combination of detail and awful to fall into the category where their very visage is discomforting. Haunting my dreams for eternity.
The developer Peaksel D.O.O. Nis has a math game still on Steam titled Zeus vs Monsters which is a math game for children and features art that while not great won’t give those children a nightmare just for wanting to learn addition and subtraction. Peaksel has a lot of creepy games on its website, including one about a pregnant talking cat named Emma. If you really want to play Undead vs. Plants you can do so on Android or Google Play. The game is still free there.
MMO Fallout 