boss fighting stages (really bad for mobile, probably like one tutorial video reccomended)
pilgrammed (deepwoken but fun)
arcane odyssey (in servers with less people + really good pc required)
hours (fun as hell)
any of the random non-grindy tycoon side-quests in clone tycoon 2 (also fighting people in flying vehicles)
Arcane odyssey (this is the second time someone has recommended it now, so you know it's good)
Starscape (all around good)
Fantastic Frontier
Sorcerer Fighting Simulator