Control characters from the original animation in a bunch of frantic minigames, Warioware-style, and try not to die horribly.
Protect private parts, clean up puke, feed picky rattlesnakes, have patience at level crossings, collect characters for your train station, get silly level completion bonuses and take the Red Button safety pledge.
The game is short and sweet but hopefully a fun way to hang out with the original characters some more. (And hopefully still a good reminder to be careful around trains.)
Source: The Developer Website.