What’s the coolest vehicle to ever appear in a video game?
For me it’s the Halo mods which let you fly the Pelican. I love flying big huge vehicles. I used to load up empty BF1942 maps just to fly the bombers around. In most of the Just Cause games I look up where the big flying vehicles are and then fly em around. Also: Mega Man Legend’s “Flutter” ship kinda rules 
RE: Myst. I bought a Myst CD and my computer screamed at me trying to install Quicktime 4 in order to run the game’s cinematics. it was really janky, but I enjoyed experiencing what I could within the original context.
For autoscrollers, the Carpet lava level in Aladdin is one I remember vividly as being stupid hard. it sped up to be nearly impossible to beat,
What is the Waiting for Godot of video games?
There is a game engine called the Godot engine, which was named due to how long the wait was to become feature complete.