I bought monkey ball today, I chose it because I thought it looked the best out of the rest. Pretty disappointing to be honest, I really don't see how they think it's worth full price. The single player game looks short, I have finished 4 worlds in about 2 and a half hours. The mini games are so-so. Some look OK but there is loads of rubbish in there too and you can't skip back to the main screen without completing that round.