Block_Up

The world is ending. The lava is rising. One of you probably started it.
Block_Up is an asymmetric co-op puzzle platformer for two players. One of you can place blocks. The other can place them. Neither of you can do it alone - and the lava below doesn't care whose fault it is.
Work together to climb each level before the rising lava catches up. It sounds simple. It plays like the best argument you've ever had.
Two roles. One team. Zero excuses.
The Placer: You place blocks to create paths and platforms. You cannot break anything.
The Breaker: You clear the way by breaking blocks. You cannot place anything.
Oh, and the lava? It just keeps rising. So do you.
30 levels. Infinite arguments.
Climb through 30 handcrafted levels with a steadily rising challenge curve - from your first "oh, I see!" to your fourteenth "no, no, put it THERE." Then keep going with community-made levels in the built-in level editor.
Oh, and collect hats. Lots of hats.
Play anywhere, with anyone.
Couch co-op for when you're in the same room. Full online co-op for when you're not - with a free friend pass so only one of you needs to own the game.