somtum.fun lets you play osu! the way it was: we rebuilt 75 osu! clients from 2008 to 2015 to connect to our server. Play the version you started with, and your scores still share one leaderboard with today's osu!(stable) and lazer (TumThai).
osu!.exe.pkms.dll, our anti-cheat, next to osu!.exe. Without it, your scores aren't submitted.The old clients need Windows and .NET Framework 3.5 (a few 2015 builds need .NET Framework 4).
Each client is our own patched build of that version. An unmodified old build, one with the old hook, or one you rebuilt yourself can't connect: see "This old osu! build can't play on somtum.fun as it is".
Can't find the version you want? Ask in our Discord or on the forum.
somtum.fun is fan-run and not affiliated with ppy Pty Ltd. osu! is a trademark of ppy Pty Ltd.