Dragon Quest Heroes II

"DRAGON QUEST HEROES II is a hack-and-slash, field-roaming Action RPG that sends players on a new adventure to restore order in a once peaceful world filled with hordes of monsters and battles of epic proportions. Up to 4 players can band together in cooperative multiplayer to conquer swarms of enemies and defeat challenging boss monsters. There is also a cast of many playable characters each with unique moves and abilities – including a host of familiar faces from the DRAGON QUEST series and four brand new heroes that must team up to defeat an unknown threat looming over the Seven Realms!"

Dragon Quest Heroes II is a action/rpg game available on PC. It supports up to 4 players online.