Rubicon
point of no return

This is the point of no return for computer games.

He would have taken them past the point of no return.

In his mind, he had already passed the point of no return.

We have not yet reached a point of no return.

He'd gone beyond the point of no return some time ago.

His air time was long past the point of no return.

She'd reached the point of no return the first moment she saw him.

In some areas, we may have gone past the point of no return.

Some even say that we have already gone past the point of no return.

We simply don't know when the point of no return is reached.