But even your game with no sequence breaks and perfect programming would be tassable. There would be earliest moments at which you could perform certain actions, and no normal player could reasonably perform every action at its earliest moment.
Ways to get around this:
- Implement something akin to the SMB 21-frame rule, so that the player has several seconds within which to perform an action such that the next part of the sequence will always start at the same time no matter when that action is performed within that several second period. (Retarded, by the way.)
- Nethack.
I mean, realistically, no, you can't make a TAS-proof game that isn't one of the obvious exceptions we've already discussed.
