It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
http://blog.supertuxkart.net/2019/04/supertuxkart-10-release.html

this 1.0 release adds support for networking races to SuperTuxKart. You can play with your friends online, and it doesn't have to be split screen anymore - your gaming partners can be in a different city, country, or even continent - you can still meet for a race or two. Cross-continent may not work the best; you should try to have a reasonable ping - 100ms works fine, and we had some races with 300ms ping, though unavoidable sudden stuttering and karts jumping around is more frequently at higher latencies. Even more important than the ping (unless it's abnormally high) is that there isn't packet loss or packet slowdowns (jitter), so a stable connection is required, especially for the server hosts. The bandwidth use is minimal even for hosting 10 players, so as long as you don't use a metered connection it should be fine for anyone with 150 kilobytes (~1.2 megabit) per second upload speed to spare. If that's still too much, less bandwidth is used with fewer players.
I actually tried one of the recent versions before that a few months back. Not shabby. It definitely has come a long way from the super-janky project it was in the mid/late-2000s.
I'm really enjoying the new multiplayer feature. Hopefully this will attract more players as it's a really great game.
Yeah, I can remember it looking like absolute rubbish well back in the early days of Ubuntu.

That actually doesn't look half bad by comparison.