Bending the video RAM on a Mega Drive 2 can get some awesome effects. In this experiment I was poking at the VRAM pins, keeping away from pins 11, 20, 30 and 40. I do apologise that my Mega Drive was on the blink for this video.

That was my experimental approach, not a complete pinout or a safe list of pins to bridge. Check the exact fitted device and package, identify all power and ground pins, and do not blindly short pins together: this can damage the hardware.