How many world lines are there at Destiny Stone Gate?

The game ontology has four world lines:

Alpha line: the line where the story mainly takes place, and the result of binding is that truth must die.

Beta line: The world line at the beginning of the story, because the short message sent by the murderer to the spool was separated, and the result of this line was that Marcuse Li Hong would die.

Ω line: It is the end of the Phyllis line of the game. Nobody knows. There is no "Future Machinery Research Institute (lab)" in the world, which avoids the death of β-ray truth and α-ray assistant, at the cost of LAB's friendship!

Stans; Door line: The game finally ended, and the assistant avoided the death at the beginning of the story with the help of the fierce truth, but there was no memory of the beta line in the laboratory, and no one else had those memories, because those memories only existed on the beta line, and the fierce truth met the assistant at the end of the story. Due to the influence of readingsteiner, the assistant "recalled" some things about the β line and started an infinite possible future road with fierce truth.

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After the spoiler is over, I don't know the specific time relationship. If you have any questions, welcome to Baidu's "Doors of Destiny Stone" for discussion!