The one with the genetically modified ducks, and when the series started to get a little out there.
New music is nice.
No shop menu this time, more streamlined training grind.
Minigame updates like purple speed pellets for flying and bouncing balls for running (can bounce on rolling balls now).
Climbing game runs smoother, swimming game got a nice visual update.
No skill level cap to be upgraded with coins, which is very good. However there is a skill cap based on evolution which is not ideal. But the caps are more reasonable this time around.
Advanced flying is fresh and fun. Same for advanced running, climbing and swimming.
Pro running looks amazing.