BACKHINGE: Every Exit Turns the Room Behind You
BACKHINGE is an original, portrait-first nine-room topology puzzle. Nell, a pine marten hinge surveyor, may cross only a pair of genuinely reciprocal doors. After she arrives, the room she departed turns one quarter: right/down turns it clockwise; left/up turns it counterclockwise. Movement therefore authors the return topology behind the player.
More backhinge creations

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.

BACKHINGE: Every Exit Turns the Room Behind You Remix
BACKHINGE is a commercial-scale impossible-house puzzle built around one original law: Nell may cross only a reciprocal doorway, and the room she leaves then turns one quarter behind her. Every move therefore changes both the current route and the future return topology.