Play Area
From Archon Arcana - The KeyForge Wiki
Each player in a game maintains their own play area, which includes all the game components currently being used by that player, as well as all in-play zones and out-of-play zones. A play area is part of the game state. Each player is responsible for maintaining an orderly play area so as to avoid confusion in the game state.
Related Topic: Game State
—KeyForge Master Rulebook v17.4 September 2024