Spelunky

Spelunky is an open source indie platform video game created by Derek Yu and released as freeware for Microsoft Windows. It was remade for the Xbox 360 in 2012, with ports to the PlayStation 3, PlayStation Vita and then back to Microsoft Windows. The player controls a spelunker who explores a series of caves while collecting treasure, saving damsels, fighting enemies and dodging traps. The caves are procedurally generated, making each run through the game unique. Spelunky is one of the first examples of a roguelike-like, borrowing concepts from the roguelike genre, and was the influence for many later roguelike-like games.