Default Dan looks like the low-effort platforming trash that lazy developers slap together to sell cards and give away meaningless achievements, but it's actually quite good. It starts out with Koopa being kidnapped (Koopnapped?) by the Princess. To save the dinosaur-in-distress you have to dodge coins, flowers, mushrooms, hearts and friendly looking creatures while being supported by spikes, pits and evil toadstools. It's Mario, except reversed. This is fairly amusing, but it quickly gets pretty hard and somewhat frustrating (which is partially by design).

If you like hard platformers, you will probably like this. Until you die to a bloody coin for the nth time. :P