Rayman has had a good run of it as of late. The last two console games -- Origins and Legends -- were fantastic platformers worthy of the highest praise. Now Ubisoft is testing the franchise's viability in the mobile waters with Rayman Adventures, and while it works, it doesn't as well as you'd hope, given how high the bar has been set.
The two defining features of Rayman games in the recent past have been vibrant, feel-good aesthetics and rock-solid controls. Mobile has no problem accommodating for the former; it's the latter that causes issues.