Simplify the following text for a Grade 8 native English-speaking person.
Original: Nicktoons Nitro ( or known as : Nicktoons Racing 3 ) is a racing game which is a sequel to Nicktoons Racing and Nicktoons Winners Cup Racing .
Simplified: Nicktoons Nitro is a video game which is a sequel to Nicktoons Racing and Nicktoons Winners Cup Racing .