
1) Mac OS game 2) Windows game
Found on
https://www.crosswordclues.com/clue/spelunx

Although Spelunx contained a basic frame story (centered on the scientific endeavors of one Professor Spelunx and his willing assistant, Mr. Seudo), there was no other plot. As a game, it was intended to be explored and played with—like a toy—rather than completed or won. Although the characters Professor Spelunx and Mr. Seudo are mentioned (a...
Found on
http://en.wikipedia.org/wiki/Spelunx
No exact match found.