Realm of the Mad God is a pixel-art bullet-hell MMO that Wild Shadow Studios launched in the browser in 2011. DECA Games runs it today, and since 2020 it has used a new client called Exalt in place of the retired Flash one. The mad god Oryx drops heroes into his monster-filled realm.

Dozens of players share one map, shooting the same enemies and splitting experience, while slain monsters drop portals to dungeons. Once the realm's key foes are dead it closes and everyone heads into Oryx's castle. Death is permanent: the character and equipped items are gone, though account fame and unlocked classes remain.

It suits players who enjoy short, intense runs and fast reflexes. Downsides are English-only text, harsh losses and paid vault space and character slots.