I was going to say replaying but I feel like that limits the question to games like Prey or Fallout New Vegas that have endings and games like The Sims 2 or Cities Skylines where you can play indefinitely end up excluded.
I’m not really referring to games like League of Legends where you’re coming back every month. More so games where you stop playing for an extended period of time.
What’s not to like? Super cool main character with telekinetic and space gun abilities. Explosions like crazy. Regular upgrades. Not too complicated. Lots of exploring. Plenty of storyline, but not too much. Intriguing characters. “Open world”, but with a mostly clear sense of direction.
Probably one of my fave games of all time. Even though I hated Alan Wake.