These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Crystal Quest
Good Bad Bugs — Pause the game as you exit the first level, then go grab a snack while a massive time bonus accrues.
Sequel Displacement — Crystal Quest thoroughly displaced Crystal Raider, a Shareware prototype so primitive that it didn't even have a Quit command. (You had to physically reboot the computer to escape it.)