I played around with making games in go for a while and found limited benefits. Go routines, while great, have too much latency to meaningfully parallelized simple tasks between the in-game ticks per second (~60hz). Along the same lines, channels end up having too many allocations/frees and read/writes to be useful at such a normal ticks per second (TPS).

The result is you can't use the best features of go, and even the 2D engine I used (ebiten) didn't use go routines or channels anywhere in the engine. I like the idea of making games in Go, but the language's best features don't shine well, and I struggle to imagine it ever taking off beyond a hobby game language.

https://thomashansen.xyz/blog/ebiten-and-go.html