Rudolph's Kick n Fly is the iPhone and iPod Touch adaptation--and expansion--of another 2D Flash game from developer Donut Games, a classic catapult game in which you launch a wee Santa into the air to see how many Christmas decorations (candy canes, gingerbread men, snowflakes, etc.) he can grab.
The interface (and gameplay) of this app is pretty limited: you touch and drag to determine Santa's trajectory (timing your release with a fluctuating power meter), and then once your elf is airborne you can tap the screen to get two separate, flatulent "bursts" for more altitude. That is to say, once you've kicked your elf and farted twice, you don't have much else to do but watch. Santa continues to bounce around, hitting bouncy mushrooms (that send him flying ever higher) and clouds (that disappear after a bounce), only finally coming to rest when he hits a snowbank, falls down a well, or just runs out of momentum. Of course, if you're some sort of Mentat who can calculate dozens of successive trajectories on a board that you mostly can't see, you'll get more out of this game--but for most users, Rudolph's Kick n Fly is largely fun for quick, trial-and-error, pick-up-and-play sessions.
This game offers much more than its original 2D, Flash-based incarnation, with 40 unlockable challenge levels that get impressively arcane given this game's relatively limited set of variables. Three different star ratings for each challenge (awarded based on how many decorations you snag) encourage repeat play, but only up to a point, given what a significant role luck can play in your success. This app has other nice touches, like a pseudo snow globe effect on the title screen, but don't expect too much.