Yes Angry Birds seems to be lower quality here too. I installed Angry Birds Rio, Seasons and the regular Angry Birds for PreEnv. All three seem to suffer from a lower res. I hope this gets better in the future. I bought all 4 level backs from OVI but the fifth one (I believe it's called Hang 'm high), isn't there on the OVI store because Nokia discontinued the N900. However it's available for PreEnv that's the reason I also installed the regular Angry Birds on PreEnv.