Chester Cheetah: Too Cool to Fool (Genesis)

As is Chester Cheetah way, is one-person play.

Kakusi (Hidden) Mode
At the title screen, press Up, A, B, C, right, A, B, C, down, A, B, C, left, A, B, C. If the code is entered correctly, a sound effect plays. Now, the useless Options screen will be replaced with a much more useful menu containing a stage select, a sound test, a lives modifier and a credits modifier.

On the top-right, a name can be seen Shimizu Ken'ichi(清水健一), presumably that of a programmer. Throughout the screen, a string, "Let's work on it" (仕事くれー), is scattered all over the place.