This is the children's version of the party game Roller Coaster Hippo.
The aim of the game is to collect hippo chits worth 44 points. To earn these, players have to complete challenges. What type of challenge a player has to complete is decided by die rolls and what space on the board the player's piece lands on. Challenges come in the following forms: pantomime and drawing (active player and player who guessed correctly both get a random hippo chit with values from 2-5), (un)true stories (a story is read from the card, active player has to guess if it's true), party games (various challenges), and bigger/smaller (cards with values from 1-9 are placed in a row, player has to guess if the value on a card is higher or lower than that of the previous card).
The first player to collect 44 points wins the game.