Games like Astroneer: Megatech

If you finished Astroneer: Megatech, the closest matches are Only Up!, Space Pilgrim Episode I: Alpha Centauri, Space Pilgrim Episode III: Delta Pavonis, Space Pilgrim Episode II: Epsilon Indi and Tansaki Katamichi no Uchuu Tansaku. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.