I like Minecraft
Wurstmineberg is a whitelisted, vanilla (non-modded) Minecraft server I started with BenemitC in late 2012. Since then, There have been a lot of changes to Minecraft, the server, and the community around it. But the original Minecraft world is still intact, even though it looks a little odd by now. If you're interested in Minecraft or just the myriad of tools people on the server have built around it, check out Wurstmineberg.de.