Celeste - Celeste is a platforming video game by Canadian video game developers Matt Thorson and Noel Berry.
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.
Dead Cells - Castlevania-inspired, action platformer with roguelike elements.
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.
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.