I’ve managed to beat the mines and jungle, and a couple of the ice cave levels in Spelunky. It’s good fun for just picking it up and playing a couple of minutes before doing other things, though I tend to play just a “little” more than a couple of minutes.
And in other news, I’ve started with multiplayer. There will be a dedicated server with clients connecting to the server. The server will be the same binary as the client, but with different command line switches.