Join the titular duo on a wacky side-scrolling adventure in J.J. & Jeff for the TurboGrafx-16. As detectives J.J. and Jeff, you must navigate bizarre levels filled with quirky enemies and humorous obstacles. Utilize your unique abilities, like Jeff's powerful kicks and J.J.'s spray can attacks, to overcome challenges and solve a mysterious case. It's a charming and comedic platformer with a distinct retro style.