Legendary Commander Shepard survived the Reaper invasion and went to sleep for 800 years. When he woke up, turned out he's the last human man in the galaxy. We'll bang, OK? Through Spacetime could be a very good game only if it would be more expanded, in all ways.
Story is there somewhere, it's not bad, writing is rather good, there is some humor, some plot twist and one story choice. It's definitely not the most important thing here. And that's fine. But the same goes for adult scenes, at the start they're pretty bad, later on they are getting better but for the most part they're short and not sexy enough. Very little dialogues during them, some of those scenes don't have any animations even later on. Renders itself are rather good, models looks nice. Cast of girls is rather diversive. Game is rather short, only take 5-6 hours to finish, have more than 40 sex scenes, you don't have to wait hours before getting into any sexy stuff. But sometimes it feels like the sex happens too quickly. Our goofy MC, after waking up 800 years later after black hole incident it's getting laid already during first 15 minutes of the game. I don't mind harem games where every girls jumps on us on very first occasion, but it could be better if there was some buildup and more depth between those characters. No big harem scene, only few threesomes. That's a shame.
Overall it's not a bad game per se, its just very basic and feels rather underdeveloped. It's not doing anything pretty bad, and its not doing anything pretty great. More time and resources put into this could really make this game pretty good.