This page details one or more prototype versions of OMORI.
To say OMORI had a troubled development history would be an understatement. It was first announced in 2014 with a Kickstarter launching at the same time to fund the game's development, and ultimately took six years to release in 2020. This is apparently due to constantly having to switch to different versions of RPG Maker as well as the story having been rewritten multiple times. A demo of the game was released exclusively for Kickstarter backers in 2018, but this has never received a public release since until it was eventually leaked online shortly after release.