I'm currently playing Rayman Origins on my Vita and after a pretty awesome start I have to say the game really loses its charm in the last levels. There is hardly any room for diversion from the optimal jump timings etc in "Mecha no Mistake" or "Get Away!" stages and sometimes they kill you a good 5-10 seconds after you made the mistake, which is just plain frustrating to me.
Makes me quite happy I didn't pay money (other than the PS+ sub ofc) for this.