Ask for the shape of the challenge.

There is no fail state, only the quiet friction of guessing where somebody else would keep their mugs.

Gentler than the first game and better taught. The co-op campaign is where the difficulty actually lives, because it needs two people to see the same solution at once.

Hard for exactly as long as it takes the idea to arrive, then trivial — a game of realisations rather than of skill.

Death is frequent, instant and immediately retried, and every puzzle is solvable from what the room shows you. Nothing here is hidden from a patient player.

Tool-based puzzles that stay scrupulously fair, while the optional stars quietly assume you will break the rules the tutorial spent an hour teaching.

The difficulty is purely attentional — nothing in the game threatens you except the square inch of grime you keep walking past.

A card game that keeps changing what kind of game it is. The difficulty is noticing which rules you are allowed to break, and when.

The only thing gating progress is knowledge inside your own head, which makes it unspoilable once and unplayable if you look it up.

Nothing fails quickly. A road laid in the first hour becomes unfixable in the twentieth, and that delay is the only real difficulty in it.

Weakness targeting is the whole of combat, and the calendar is the real difficulty: a day spent wrong in November cannot be spent again.