BrainRush (spelled BrainRu$h) is a live-action game show on Cartoon Network, hosted by Lamorne Morris and, to a lesser extent, Sarah Karges. It first aired on June 20, 2009. The show was canceled due to low ratings.

Unwitting contestants are asked to answer trivia questions on roller coasters. The show takes place at Knott's Berry Farm in Buena Park, California.

The host sits on the Boomerang. Anyone who sits next to the host becomes a contestant. Each contestant is asked a series of questions over the course of the ride. (As noted in episode 4, the total ride time is one minute and 45 seconds.) Each correct answer is worth $25. The 2 contestants with the most money advance to the second round.

In the event of a tie, a tiebreaker question with a numerical answer is asked (generally, the question is about the Boomerang coaster). The contestant whose guess is the closest to the correct answer without going over moves on. The eliminated contestant is paid his/her winnings immediately.

Each of the remaining two players picks one of two games, hidden in two colored envelopes. The player with the least earnings from level 1 goes first. Generally, each part of the game is worth $50 and both games have the same amount of money available ($300). The money from both rounds are combined, and the person with the most money at the end of this round wins the game. The losing contestant is paid his or her winnings immediately. If there is a tie at the end of round 2, a numerical question is asked in a similar manner to round one.