A predetermined area designated for game playing. All players must stay within these bounds or they are penalized in some way, usually they become IT. A game boundary can be anything as long as it is predetermined before the start of your game. Suggestions: Use the natural boundaries of your front lawn, property or house. Set some stones at the corner of your game area, set some tree branches for your game area edges, draw chalk lines or use masking tape to mark your game boundaries. For larger scale games you could designate your whole block or neighborhood as the play area.