It's a browser version but it's no where near finished, some people may remember 4,3,2 it had stats websites as well 🤓 This is the 3rd or 4th time at least I've started from scratch for sk5 over the last 5 ish years so don't get your hopes up that it will see the light of day...
I went a bit over the top with spawn killer 4 making it look like UT's menu system, I remember some guy playing for hours at a time which was kind of nice to see, but it did less well overall compared to spawn killer 3 that had simpler menus and didn't have the ctf stuff.
