I'm sharing this in some communities so we can get more votes about this! In the article I'll be showing the characteristics that differentiate from version to version:

v1.0 (2) (October 9, 2015) (APK and OBB lost): Release version. FNAF 1 Night 1 is a bit different from v1.1 and versions above. We don't know how much different it is, we only know that it had "tiny fixes" in v1.1 and that's it. This version is the most similar to Four Nights it can get, there's no mentions about a MAP 2 (FNAF 2) coming soon, and Multiplayer used to be more expensive. We also don't know how much, but the price was changed in v1.1.

v1.1 (3) (October 14, 2015) (APK and OBB lost): The game has now mentions about MAP 2 coming soon! In the menu, there's a box that says MAP 2 COMING SOON, but when clicked it says about the maxCCU the game reaches (which is 20), so nothing that relevant. In the Multiplayer MAP 1, the MAP 2 COMING SOON "ad" was also added on top of some buildings. There's also this scene called 'chapter', it was in the game until 1.8 (https://www.youtube.com/watch?v=Y2od2DfpUzk). It's believed that this scene would pop-up if you clicked "choose a map" for MAP 2 in v1.1, but i don't know if it was just broken or something, because there's no videos where people click on that, maybe they do but nothing happens, or something should only happen if all nights of MAP 1 are beaten. It could be unused who knows. FNAF Night 1 had some tiny fixes and the night is the exact same until v1.7.

v1.4 (5) (November 7, 2015) (OBB lost): There's no actual differences between MAP 1 from 1.4 and 1.5, they're actually the same. The menu is a bit different now since the "select a map screen" has a different cover for MAP 2. And it's also the version where MAP 2 was added! Night 1 used to have Withered Bonnie chasing you, this is exclusive to v1,4, because in v1.5 and above, his behavior was changed to disappear after some seconds. it's also believed that this version has an exclusive 'harder' version of Night 4, which i like to call "Hard Night 4", the reason for this is because every animatronic can kill you! It wasn't glitched just like Night 3 in v1.4, but for some reason it got in v1.5 alongside Night 4, where the animatronics can't kill you. Night 3 ended up being fixed in later versions, but Night 4 didn't, which makes Night 4 v1.4 an "exclusive experience" since you can't cheat death and you need to avoid every animatronic.

v1.6 (7) (January 21, 2016) (OBB lost): The most notable addition is the Multiplayer MAP 2! And the revamp in Multiplayer MAP 1, it's considered the latest "classic" Vincent version. Vertical integration was added and a character was now only limited to one person! It's a mix of v1.5 and v1.7 basically.

Regardless of the versions, there's one thing that's important about all of them, their OBB files! Not that APK files are not important, they obviously are, but the lingering question still is: when did some assets got removed? are there more secret and unknown assets in older versions? We found lots of interesting stuff, like Fonky! The secret animatronic that got removed in Vincent! All we have from him is his jumpscare image, but on a updated reupload of it called Scary Nights, we have his full model! Was Fonky's model in older versions of Vincent too? Is there other secret scenes? What next to uncover? I can't say for sure, but if someone happens to have any of these versions it would be GREATLY appreciated! We've been looking for these LOST versions for 3 years at this point, and we long to actually play and re-play them and discover their secrets!

What about me? What version I want the most to be found? Of course it's v1.4! It the first one I played in my childhood and I don't want to rest without playing it once again, I want to make people aware of it! Not only about v1.4, but also v1.0, v1.1 and v1.6 too! WE STILL NEED YOUR HELP! Thank you very much if you read all of this text!