What are some alternatives?
When comparing Marvel Heroes and Titan Quest, you can also consider the following products
Drakensang - Drakensang is a Single-player, Third-person, Role-playing and Adventure-based Combat video game created by Radon Labs and published by DTP Entertainment.
Grim Dawn - Crate Entertainment is an independent development studio founded by former design and art leads of Iron Lore Entertainment.
Guild Wars 2 - Guild Wars 2 seeks to change the face of Massively Multiplayer Online Games.
Path of Exile - Path of Exile is a free to play online action roleplaying game that draws clear inspiration from Diablo but charts a path all its own.
NieR: Automata - NieR: Automata is an Action-Adventure, Role-playing, Combat, Fast-paced and Single-player video game created by PlatinumGames published by Square Enix.
DARK SOULS III - Dark Souls III is an action-RPG known for its difficult gameplay. You play as an Unkindled undead, trying to bring back the Lords of Cinder.