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simgrammar the grammar of simulation

core loop

pick a procedure -> move the hand and press finger keys to grab tools -> cut, break, and remove body parts -> place the new organ -> keep Bob alive -> score and time

design notes

Made in 48 hours at the 2013 Global Game Jam, the game turns control difficulty into the content: the mouse moves the hand, a mouse button rotates or lowers it, and A, W, E, R, and Space close individual fingers, a scheme modeled on Jurassic Park: Trespasser. Tools and organs are rigid bodies, so most outcomes come from collisions and dropped objects rather than authored surgical steps. Medicine is a comic frame with a thin vital-sign model; a heart rate at zero requires charging the defibrillators. Included as a boundary case for embodied control.

relations

4 stored edges
uses

Embodied skill control

The mouse moves the hand, holding the right button rotates it, the left button lowers it, and A, W, E, R, and Space each close one finger, so grasping a scalpel is itself the challenge.

core
uses

Rigid-body physics

Instruments, organs, and bones are physics objects that collide, slip, and fall, so most mistakes are physical accidents rather than authored failure states.

core
uses

Injury body model

Damage to the patient drives a small vital-sign model; when heart rate reaches 0 the player must charge the defibrillators.

supporting
uses

Scenario objectives

Procedures such as heart and kidney transplants are replayed in an operating room, a bouncing ambulance, and zero gravity.

supporting

sources

2
Wikipedia contributors (2026). Surgeon Simulator. Wikipedia

provenance

runs in log/runs
2026-10-24
created2026-10-24-catalog-gfcatalog