Through Spacetime is a sci-fi harem game with hot 3D rendered sex scenes, developed by Empiric. Check the developer Subscribestar page here.
The year is 3021 and as the last male in existence it's up to you to save and repolulate the universe. Start out with the women you're sharing a spaceship with, as your journey progresses you might encounter some sexy alien species to further expand your harem.
Current version: Episode 10 Part 1