This game was one of the reasons I bought the PSP slim for. The gameplay was brilliant and I really enjoyed what I have seen so far of the game. There is however one major flaw for me and that is I couldn't get beyond level 2-1. After defeating the mad `Mama' with her demented chickens I saved the game and switched it off for the night. The next night I switched the PSP back on and loaded up the game only to find that when the load indicator reached half way it stopped loading and then the whole PSP switched itself off. After several attempts the same thing happened, so I ordered a second copy of the game from a different store. With the same results. I then tried my friends PSP, which is one of the old style systems, and it worked fine.
I reached my conclusion that it had to be the PSP, so I returned it to the store I purchased it from and picked up a new one only to find that it also couldn't play the game and the same thing was happening. Feeling defeated I returned to the store to get yet another PSP and the SAME result was achieved. The only conclusion I can now reach is that either all the PSP's from the shop are faulty or that the game (being one of the earliest PSP games available) is not compatible with the newer PSP slim model.
Worth noting, is that all other games worked fine on the PSP systems with the exception of this game.
Very disappointed, as really enjoyed what I had played up to that point. The game would have been 4 or 5 stars for me, but due to this problem it has to be only 2 stars