Multiplayer action rpg games for PC/Windows with 4-player online support

Rotwood

Players: 4 local, 4 online

Portal Dungeon

Players: 0 local, 4 online

Gatedelvers

Players: 0 local, 4 online

GOD EATER 3

Players: 0 local, 8 online

Never Split the Party

Players: 0 local, 4 online

Rogue Heroes: Ruins of Tasos

Players: 4 local, 4 online

Gotham Knights

Players: 0 local, 4 online

Ember Knights

Players: 4 local, 4 online

Enshrouded

Players: 0 local, 16 online

Magicka 2

Players: 4 local, 4 online

Hero Siege

Players: 0 local, 4 online

Hammerwatch

Players: 4 local, 4 online

Diablo II

Players: 0 local, 8 online

Titan Quest: Anniversary Edition

Players: 0 local, 6 online

Grim Dawn

Players: 0 local, 4 online

Diablo

Players: 0 local, 4 online

Dungeon Lords

Players: 0 local, 4 online

System Shock 2

Players: 0 local, 4 online

Torchlight II

Players: 0 local, 6 online

Heroes of Hammerwatch

Players: 0 local, 4 online

Streets of Rogue

Players: 4 local, 4 online

Sacred

Players: 0 local, 4 online

Marvel Ultimate Alliance

Players: 4 local, 4 online

Dungeon of the Endless

Players: 0 local, 4 online

Dungeon Siege

Players: 0 local, 4 online