Playing through Never7 after going through Ever17 and Remember11 made me come up with a theory that i don't even know if the author had in mind when he first wrote Never7: what if a being from either the 4th or 0th dimensions had the protagonist and his girl of choice go back in time to save them? With the interference in the two other games, if wouldn't be that surprising.

Coming up with this theory led me to even more thinking, because those interferences can lead up to a interesting timeline, like so:

Remember11 (2011 in game): Humans go up against 0th dimension being to get rid of his influence on the world.
Ever17 (2017-2034 in game): Humans cooperate with 4th dimension being to save their friends.
Never7 (2019 in game): 0/4th dimension being helps humans from afar.

That way, we have a timeline where beings beyond this dimension went from being in opposition with humans to being friends with them and helping them when needed. However, time might not flow that way for them, and if you change the timeline to the release date of the games, things get a little more somber:

Never7: 0/4th dimension being helps humans from afar.
Ever17: 4th dimension being interacts with humans for the first time, even being friends with them.
Remember11: 0th dimension being accidentally makes the lives of the humans worse, leading to backlash via infinite loop trap.

That way, we have a timeline where beings beyond this dimension went from watching humans from afar, helping them at random, to being friends with them, to becoming their enemy by accident.

Overall, it's pretty interesting how you can come up with stuff like this because of how the world works in that trilogy.