This guide outlines the differences in the versions from v1.2+ onwards, let's go into more detail:

• v1.2/v1.2.1 - This version fixes most of the visual glitches in the game, this version however has a glitch in the clinic where you can skip waiting for the door to the stairs to open after by going left up the stairs saving time, it is a faster version in this section that allows you to take advantage of these glitches but not faster than v1.5.

• v1.3 - This version fixes the clinic bug and added an extra cutscene before the fight with the mother, it is a slower version in Ending II, this version in Chapter I when playing on Turbo x4 mode allows you to skip the She is here text faster saving time.

• v1.4 - Same as v1.3 except that Alu's HP is reduced to 25%, from this version you can play Survival Mod.

• v1.5 PC - This version adds a cutscene skip so you don't have to watch cutscenes every run, it saves a lot of time, however Chapter III has a lag frame which is hardware dependent, it is more noticeable in John's house and skipping cutscenes from waking up from a nightmare.

• v1.5 Switch - This version is identical to v1.5 however this version has no lag frame in Chapter III, in press a new game in Chapter III there is a loading screen for 500 milliseconds (every new game not counting the first one every time the game starts), this is the fastest version in Chapter III because of the no lag frame, please note that crux glitch frame perfect press is not possible on this version which will lose a few seconds in Chapter I and Chapter II, if you prefer to use this version then it is recommended to use the digital version, the physical version has a bit long loading times