This will be a guide on getting Minecraft 26.3 running on OpenBSD via wine.
# sysupgrade -s
$ cd ~/Downloads && bsdunzip PrismLauncher-*.zip$ mkdir prismlauncher && mv * prismlauncher && cd prismlauncher$ wine prismlauncher.exePrism Launcher will open. Go through the onboarding process, login, and you should be thrown to the instances screen. Create a new 26.3 instance.
Launch it, and you're done!