About Master of Orion 2
Master of Orion II: Battle at Antares is a 4X (Explore, Expand, Exploit, Exterminate) turn-based strategy game set in space.
While the universe if entirely fictional, you can learn about space exploration and colonization. It is also a great game for developing skills in problem solving, strategizing (e.g., understand that decisions early on in the game have big consequences later on), science and research, and (basic) diplomacy.