I'm no Minecraft expert, just had to look it up on Wikipedia, but looking at the graphics, and the fact in runs in JAVA, I reckon its not going to be playable on a Raspi without decent GPU acceleration, and I'm not sure it would use it by default. Even with acceleration its going to be touch and go whether its playable.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
“I think it’s wrong that only one company makes the game Monopoly.” – Steven Wright