So yeah, Slippi Online uses a version of the Dolphin emulator to play Melee online with nearly no lag, we’ve been hosting tournaments for a few months on it, but now Nintendo has shut down one of our bigger ones. This is likely to have major ramifications for the competitive Melee scene if we can’t host/stream/put voids on youtube for the entirety of Covid since Melee has no native way of playing online.
Ever since like 2015 or so Melee has had a fairly good homebrew online system based on the Dolphin emulator. This year, someone came out with a different version (still based on Dolphin) called Slippi that adds in rollback netcode (the gold standard for 1v1 games). Slippy runs using a vanilla ISO of melee with gecko codes and emulator tricks.