The game works perfectly except many graphical glitches with textures (mainly those in the background). any hints?
I have Acer Liquid Metal, official Froyo
You should contact GameLoft. They officially support the Acer Liquid for that game, and thus should be able to help you (or at least take a bug report). They don't specify which versions of the Liquid they support, so it could just be that they haven't tested on the Metal.