Pocket Diablo

From Wikipedia (for anyone who has been living under a massive rock and has somehow never heard of Diablo)

Diablo is a dark fantasy-themed action role-playing game developed by Blizzard North and released by Blizzard Entertainment on November 30, 1996.
Set in the fictional Kingdom of Khanduras (located in the Diablo series fantasy world of Sanctuary), Diablo has the player take control of a lone hero as he or she battles to rid the world of the eponymous Lord of Terror. Beneath the town of Tristram, the player journeys through