>>56099473You mix parallel universes and timelines. Those are two different things. Here is a small diagram made on paint, I simplified it in reality it is slightly more complex and there are other possibilities.
The multiverse has an infinite number of Universes, so we can have Universes that look similar or are identical, while still being distinct Universes. These are called parallel Universes (they can also be very different like those of the Ultra Beast). Each Universe can have timelines (or not have them). A timeline does not have its own space-time like a parallel Universe, no it arises from an already existing Universe, it is the same space-time.
For Terapagos several possibilities:
1- Terapagos uses TL2 to modify the future of TL3 which already existed.
2- Terapagos uses TL2 to modify TL3. We can't change the future of a TL3, so does that create NTL4 from TL3.
3- Terapagos create a loop in TL2 (Paradox Bootstrap). Does not affect other TLs.
4- Terapagos modifies TL2 since the TL2. But he can't change an already written TL2, so he creates NTL4 from TL2. Does not affect other TLs already existings.
5- Terapagos modifies TL2 since the TL2. It changes the future of TL2. Does not affect other TLs. But the game was never modified for logical reasons, so exclude this.