i try to start the game (preloug), but nothing happens
There is no prologue as its just a prototype game disguised as a real game.
From what i can see from going to their collection of games they made, its basically the same game but split up in updated segments.
Basically there is no real content of the game, and the only thing you can do is fool around in the gallery and play their pointless combat system.
The combat is basically supposed to be a take on Expidition 33's turn based combat, but it lacks logical fighting, so its all rng in its gameplay.
The survivability does not exist in the game, as there is no actual survival in the game, and the use of weapons in that aspect is pointless, since you have to run back and forth so you can kill the target before entering a Turn based fight.
And even if you complete the fight you gain nothing, but if you kill the target before it goes in to a turn based fight, you gain something.