15 Gameplay Glitches That Actually Became Features In Video Games

Diablo II’s Hammerdins

A Hammerdin in Diablo II was completely a fan discovery. Players found that by combining the magic items concentration aura and blessed hammer, it would cause the hammer to deal more damage. The hammer was only supposed to increase a character’s physical strength, not affect damage output. Players started using this and even designing entire builds around it, so developer Blizzard decided to make it a feature of future games.