So many people think open source games are a no-go. But there are many good FOSS games. Luanti CTF is one of those games I really enjoy. It is based on the open source voxel game engine Luanti which has similarities with the closed source Minecraft game.

Showing server list in Luanti

I have been playing this game since youth years. And now I also develop the game :)

Server address: jmaminetest.mooo.com:30001

Some YT channels posting CTF vids:

Edit: See this post from rubenwardy on history of CTF. He started the game. And as he lost interest, he did a wise choice to hand it over to someone else.

Edit2: This server, and also other servers in the JMA network is strictly family friendly. Bear this in mind when playing on the server. This also means it could be a good playground for your kids, if you’ve got any :)