Pac-Man hack seen in arcades in 1981. Ghosts have jowls, Pac-Man character has legs and looks frog-like. Notable for being mentioned in "Mastering Pac-Man" by Ken Uston (1981, 1982).
Ken Uston notes game is copyright "UCI, 1981" while modern-day owners say the cabinet says "Entertainment Industries", and both are possible: Entertainment Industries may be the distributor/publisher and UCI the "developer".
There's a game called "Maze Man" in HBMAME which seems to be a different and more recent hack.