Ask for the shape of the challenge.

Map and compass navigation with no waypoint marker is the only thing in it that asks anything of you at all.

There is nothing here to fail. It is in the catalogue because the bottom of the scale has to mean something for the top of it to.

Effectively unloseable, and built that way on purpose — the only thing you can fail to do is look up.

About as hard as deciding to take the long way round — the summit is never in doubt, only when you get there.

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

Gentle to look at and quietly ruthless to score — the tile you place carelessly on turn ten is the one that ends the run four hundred turns later.

Badges let you paper over whichever skill you lack. The special world at the end is the only place it stops being polite about that.

Barely a difficulty at all — the only obstacle is the calendar, which hands out content one real-world day at a time and cannot be argued with.

Needs decay on a timer and nothing else really threatens you. The depth is in what the systems let you build rather than in anything they demand.

A management game with no failure state. What it asks for is patience and a ferry schedule, not skill.