Guessed by @TruckOSaurus
The game that gave me belonging for four years.
Since then, I've been struggling a lot with that word. The Smash community through which I'd made so many friends and had so many good times with has since crumbled completely, and I've been on my own... well, this year I thought I'd found belonging in another community, but I burned bridges with it in a pretty bad way, it was rather traumatizing... but anyway. Yeah, Smash 4 was great, I think it was a much better 1v1 competitive game than Ultimate is, and I miss those days. God I miss those days.