This article has a talk page!This page details bugs of 40 Winks (Game Boy Color).
Password Menu Corruption#
Entering the password menu for a second time after using it once or after booting into a level and returning to the main menu will cause the password characters to be replaced by random text from the ROM, occasionally showing garbled characters. The otherwise unused level names can be seen through this bug.
Level 5 Slowdown#
The final room of Level 5 (Prehistory) suffers from major slowdown, causing the game to run much slower than normal. Collecting enough items in the room solves this, bringing the game back to normal speed.