Tutorial
Also said as Training level, Prompted teaching
A part of the game set aside to explain how to play, usually with instructions. It can be a dedicated level, or short prompts that appear as they're needed.
People don't remember rules they read before they had any use for them. A prompt at the moment of need teaches far more with far fewer words, and an unskippable one punishes the people who already know how to play.
Say it
“Cut the opening text screen. Show one short prompt when the player reaches each obstacle, never more than five words, and don't show it again once they've done it.”
Where you’ve seen it
Breath of the Wild opens on the Great Plateau, a region you can't leave without a paraglider, earned by finishing four shrines that each hand you a key ability. It is a tutorial that feels like the open world.
Not to be confused with teaching by doing
A tutorial tells you, then has you try. Teaching by doing just sets things up so that you find it out for yourself.