Hallo Janko,
You are right that the cover is based on Montezuma's Revenge. On the disk is a kind of new version of Montezuma's revenge, but I have taken a look at your video and you don't have to be worried ;)
Schränker 3 is a completely new game with new graphics, new music and new elements in the game. The game on the disk is a reprogrammed version of Montezuma's revenge with new levels, but with the same graphics, sound effects and elements used in the original game. This game was an entry in the Software Contest of 2022, but was denied because the graphics and sound were exact copies of the original. So we decided to publish this game outside of the contest.
Looking at your video 8-) it looks and sounds amazing! So don't worry! We would love to see and play it in next years contest!
Kind regards, Fred