Conversion

Conversion was a prequel mod for Portal 2 set in between the events of the original Portal and Portal 2. It would have featured 6 "chapers", each about an hour long. The game was cancelled on July 1st, 2015 via a Steam Community post and then it went silent for 3 years. The developers stated it was due to Portal Stories: Mel being too similar. A spiritual successor, prePostscript, was announced July 18th, 2017.