Mojang's card combat game, Scrolls, enters its alpha state today, with a random selection of those who signed up due to receive email invites. Alpha accounts supply a full set of scrolls, access to the deck builder, a basic single player mode, multiplayer and a tutorial. That sounds like a decent amount of things to be getting on with. I'm hoping the single player campaign planned for the final release will be decent. I can't be the only person who enjoyed the slightly wonky MicroProse Magic: The Gathering, with its huge, random maps.