#8 Dungeon Fighter Online
Developer: Neople
Released: 2005
Revenue: $4.37 billion
Dungeon Fighter Online had a brief run in North America (it was also re-released globally in 2015) but achieved the majority of its success in South Korea and Japan. The online 2D beat-em-up game was developed on a small budget and wasn’t expected to achieve much success, but ended up spawning a generation of side-scrolling online action games. An anime and manga have also been adapted from the game.
Iryna Tiumentseva/Shutterstock.com
