Marathon
Software
Current primary game being played
"The game that I'm playing the most right now, Marathon — if anyone is playing Marathon — it has like 12,000 players at the moment and it probably cost 200 million to make."
More source quotes
Cooperative gaming for adults who want casual, non-competitive multiplayer experience
"If any of you guys are playing Marathon, it's a great game. You should play it. This is the first time since I was 14 first time since I was 14 years old, I'm 38 now, that I actually played uh like a shooter competitive multiplayer game with other people be..."