I was playing the 2016 version of Master of Orion, and it’s a perfectly fine game, something akin to Civilization in space, it’s just not nearly as complex or interesting as Stellaris. Stellaris has created the ultimate space strategy game, and keeps adding new mechanics and features. I don’t really see why anyone would need to make a space strategy game again.
Call of Duty was one of the very first traditional multiplayer shooters, though. I had a blast playing it on PC online in 2003 when there really weren’t a lot of other options, I really love that first game in the series.