Bullet chess is also quite a different game, as the short move time opens up metagaming. Since it's so fast, you have to pre-move. Basically that's saying "if t

Bullet chess is also quite a different game, as the short move time opens up metagaming. Since it's so fast, you have to pre-move. Basically that's saying "if this move is valid when it's my turn, instantly play it", to save time. But then people end up speculating on what an opponent will pre-move. Maybe you do something unexpected, so their premove doesn't work and they have to do another move and lose some. Maybe you can assume they have pre-moved something, so you can do something that's objectively a bad move, but get away with it since they can't punish you for it, having already decided on their move etc. Quite a different game, but fun to watch.