In about a week, Metroid Dread, a game that had pretty much been considered dead for well over a decade, will be released. This came as a shock, as many Metroid fans (myself included) considered it to be vaporware: a game which was in development but disappeared before ever being released.
The nature of game development is often so chaotic and so difficult that projects will often be deep into development, but still end up never releasing. Sometimes, these games will even be announced and shown off at expos, leaving the public with interest piqued but ultimately unsatisfied as the game vanished.
What vaporware still lingers with you? What games that never came out still tickle your imagination to this day?