Alto's Adventure is, without a doubt, one of the greatest snowboarding game in mobile devices. Not only because its gorgeous graphics with incredible music, the gameplay was made to still be challenging enough, even in the slightest time you had to play with.
However, the developer of Ski Safari, Sleepy Z Studios (before, they were with Defiant Dev), doesn't seem to create their next game as a challenge. But rather, as a fun game to add moment of excitement to all players. Hence, Ski Safari 2 was released last August, and it's already a #1 Paid App in 11 countries.