ZippyRedPlumber

If you insist on reviving old, obscure IP (which perhaps noone maintains), you could do a Cuthbert game in homage to Steve Bak who passed away from diabetes in February 2019.
https://www.mobygames.com/game-group/cuthbert-series

I mean the Cuthbert series once were significant enough to warrant Activision sending a C&D to Microdeal for removing Cuthbert in the Jungle, being FAR too much alike Pitfall!

Monty Mole? The Monty series was relegated largely to the European Microcomputer crowd, but it was still fairly popular. C'mon, a mole in a tracksuit, what could possibly go wrong?

@Shawn Que Paso?