Coming from folks behind Portal: Prelude, I Hate Mountains takes Francis and the gang deep into the wilderness in a full five maps. The survivors will venture through a branching forest, explore a spooky mansion, probe tunnels, venture into a lumberyard and visit a lake.

A Left 4 Dead 2 version of I Hate Mountains is also in the works, though the team notes it "is simply a quick'n dirty port for the people who don't own Left 4 Dead 1" so it will suffer "no conversations between survivors... missing visual effects, missing objects and more importantly, the whole gameplay was initially thought for Left 4 Dead 1."

Thanks to Shacker ahem 'Godhatesfatpeople' for the tip-off.