Sins Of A Solar Empire - Sins of a Solar Empire is an Adventure, Strategy, Real-time-strategy, Science-fiction, Exploration, Aliens, Single and Multiplayer Space Simulation developed by Ironclad Games and published by Stardock.
Hollow Knight - Descend into the Dark Venture down into a beautiful, ruined world of insects and heroes
EVE Online - Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.
SuperTux - SuperTux is a classic 2D jump'n run sidescroller game in a style similar to the original Super...
Endless Space - Endless Space is an Amazing, Strategy, Science-fiction, Turn-based, Space, Futuristic, Exploration, Co-op, Single and Multiplayer Space Simulation created and published by Amplitude Studios.
Super Meat Boy - Let's start with what's the same: Dr. Fetus is still a jerk, gameplay is super challenging but fair, there are tight controls and great levels and you will die. a lot.