Vlambeer's hit single-screen action game Super Crate Box is now available on Steam as a free download.

Super Crate Box challenges players to collect as many crates as possible before dying. Each collected crate awards a random weapon, some of which are more useful than others. Problem: an endless stream of enemies wants you dead, and if any creature reaches the bottom of the screen before you kill it, it'll return at the top of the screen, angrier and tougher than before.

Super Crate Box includes a long list of unlockable stages and weapons, and it does a good job of making you want to keep playing until you reach the next score goal. An iOS version is also available, if you want to play on the go.