Marvel Super Hero Squad Online is a free-to-play browser MMO published by Gazillion Entertainment and developed by The Amazing Society. SHSO is based on the eponymous line of toys and the television series, and therefore aimed at a younger audience.
Players go about accomplishing missions and collecting heroes to form their own Squad. The more a hero is used, the more power they gather, soon allowing players to unlock animated emotes for the game’s social aspects. Combat is a simple affair, mostly involving right and left mouse clicks, as well as a number of abilities accessed through on-screen icons, and players can even weaponize some objects in the environment.