Before you start playing the crossover, which is awful imo because of Maya and and Sophie having horrible voice actors in German and the trials weren't that good and because of Layton bs logic like always, rather play Ace Attorney Investigations 1 and 2.
It takes place after AA3 so it makes more sense anyway, it doesn't have to do anything with Phoenix Wright however.
They are somewhat different but still similar the AA 1-3, but the graphics are better imo because AA 1-3 were just GBA ports and the images weren't completely optimized for the DS.
The soundtrack is also really great and in the fan translation of AAI 2 it is especially good.
It takes place after AA3 so it makes more sense anyway, it doesn't have to do anything with Phoenix Wright however.
They are somewhat different but still similar the AA 1-3, but the graphics are better imo because AA 1-3 were just GBA ports and the images weren't completely optimized for the DS.
The soundtrack is also really great and in the fan translation of AAI 2 it is especially good.