Shadowrun for Xbox 360. No I'm not joking. Fantastic FPS with fun choices to make. Also, because it never gained that traction that a Cal of Duty or Gears of War game ever got, the player base was small and never got amazingly good at it. I also noticed less children on the mics, which was great for actual communication. I always liked to play a dwarf with resurrection. I was a monster of a support character.
As a kid I beat Nick Bruiser in 5.53 seconds in Super Punch-Out!! on my SNES which, last I checked, is better than any time recorded. I have NO idea how I did it. I was really good at the game, and had great patterns for each enemy and I once just hit him right and he got KO'd. That particular pattern had him getting knocked down around the 6 second mark, but he always got back up. That was worked into the pattern. He just...didn't get back up. What I presume is that there's an infinitesimal chance each boss can not get back up, even when knocked down the first time like 99.999%. Each time, and depending on how you knock down the boss, that percentage drops and can even go to 0% for some bosses. Perhaps I got the 0.001% chance. I don't know. I didn't do anything different than my normal routine, in which I used to beat him in under 20 seconds. Naturally, this was before the internet was super wide and my family didn't have it. I had no way of recording this feat and broadcasting it. Also, every so often my SNES games would just lose their saves, and of course the save is gone forever. I'll just have to live with it in my heart.
@trafalgarlaw: That's a tough one for me. I mean, FTL does take place on a spaceship, but you can't exactly explore it. You're not on the spaceship. You're commanding guys who are. I'll have to think on that one a bit more.
@corevi: Well how much of the gameplay of EVE Online consists of you being out of your ship walking around? Also, when did that add that? SO there's a character creator now, not just a portrait maker? It's been like a decade for me.
@nightriff: You are the ship, which disqualifies it for this list. We're talking about a list for people who like the atmosphere and setting of the inside of space ships/station/bases. You don't walk around on a ship...right? I don't know. I played the trial of EVE in like 2005 so I don't know if they changed it. Do you walk around on a ship or station for more than 50% of the game?