Mappy is an arcade game by Namco. First introduced in 1983, it was distributed in the United States by Bally/Midway. Mappy is a side-scrolling platform game that features cartoon-like animals, primarily cats and mice. The game's main character itself is a mouse. Mappy runs on Namco Super Pac-Man hardware, modified to support horizontal scrolling. The name "Mappy" is likely derived from mappo, a Japanese (slightly pejorative) slang term for a policeman. The game has been re-released as part of several Namco arcade compilations, and has spawned a handful of sequels and a 2013 animated web series, developed by cartoonists Scott Kurtz and Kris Straub.
Source: Wikipedia (https://en.wikipedia.org/wiki/Mappy)
https://youtu.be/wgDtk_gajeI
The video is missing the excellent Atari 2600 homebrew version released last year...
https://youtu.be/qe6VIOmJd2Y