Spelunky
Spelunky is a roguelike game with a focus on risk vs. reward. It has randomized levels, traps, and enemies. The player controls an explorer, known as the spelunker, who explores underground caves to collect treasure, defeat enemies, and avoid traps.
Don't Starve
Don't Starve is an open world game with randomly generated levels and a focus on survival. Players control an individual character, who is dropped in the wilderness and needs to find food to survive.
Rogue Legacy
Rogue Legacy is a 2D platformer. The player controls an unnamed protagonist who explores the castle in search of the wizard who cursed the protagonist's family.
Demon's Souls
Demon's Souls is an action RPG. The player controls a warrior who was betrayed by the king and is sent to a living hell of a world.
Dark Souls
Dark Souls is a 3D action RPG. Players control a character who is on a quest to reclaim a stolen soul from an undead lord.