Sojo

"Sojo is a 2-player co-op and massively multiplayer online RPG, set in a persistent world with open world exploration and fast-paced active turn-based combat. The game features four classes, level 20 max, and item-based progression with 400+ unique items, 100+ abilities, and 70+ quests. Group with up to four players, engage in PvP, and experience interactive day-night cycles affecting enemy spawns."