I can think of a lot of reasons to why an Amiga 500 couldn't run Angry Birds
Please start listing them! Enlighten me!
320x256 screen res would suffice
32 colours
scrolling is not an issue
physics would not be an issue (eg look at Stunt Car Racer).
Music not an issue
Sprites not an issue
Hell you could *almost* write the game in Amos!