so... ¿there is a list where we can download and play the older versions like selectables episodes?,in project x love potion disaster there are something like that where we can download freely a list of the olders version of the game too so... ¿someone made a list with all the versions of this game?,because i want to play them in order to know and follow the story of the game,i know there is this end of the demo animation where we see a girl sit on a bench in every end of the demo so i can know when the game demo version is ended,i want a list like that so is more easy to know where to begin and that's because the post recomend to play the olders version like episodes too.
It´s not necessary for you to play every single game demo of FOBS. What each new version brought was either new enemies or zones, there is no such thing as a story yet, and i doubt there will be one in the near future. There are no dialogues or cut scenes, or even chapters. This game is nothing like the game you mention, as this is kind of a sandbox game.
As of now, FOBS has two versions because of engine limitations in the number of enemies it can have in a single game (that's why now Zell is trying to move to a new engine).
If you want to play them in "order", you should first play version A1.20a, this has the zones and girls that were created first and as time went on more zones were added. This final version has all the zones and powers that were added as the game was being updated. You kind of have to follow an order, because you need to get certain power to access new areas that are blocked, but appart from that you can pretty much go in whatever order you want.
The "end of the demo" was not an animation, it was a sprite of a wolf girl sitting on a bench, which meant another zone was planned to be added there in future updates.
The second version, vB1.05, came after, has no new powers to unlock (you can copy/paste the save file from the old version to the newer and you can unlock all the powers) and now you only need to visit new zones and try to catch the new girls.
You will know you have unlocked everything there is in each zone when you visit the gallery, and you see a flag with the main characters head on it.
There are newer versions coming out, but these are in a new engine and right now it's pretty limited what you can do in them, so i would recommend trying the new engine once you have tried and "cleared" the first two demos in the original engine.
That´s pretty much it, hope i helped.