core + attic (Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

quest

Canonical URL: http://schema.org/quest

Thing > Property > quest

The task that a player-controlled character, or group of characters may complete in order to gain a reward.
Values expected to be one of these types
Thing
Used on these types
Game
VideoGameSeries

Schema Version 3.3