Super Puzzle Fighter.
I don't know if any of you have ever played this but it is a fantastic game. I originally started playing it for the Sega Saturn way back in the day and it eventually got bumped to X360 and PS3 as downloadable.
It was cool at first, you could go online and play anyone at anytime. Now, even online you can't find a game to save your life. I recently pulled up the game on my PS3 and hit search to find a match, went to the kitchen and started cooking dinner. No dice. Left it up, went upstairs to check my email. No dice.
It really is a bummer too because this is one of the all time classic and competitive games out there. It takes minutes to learn and years to master. At one point there were some really good players out there.
I think we've all gone extinct.