TRON Grass 101: 1. Unpause. 2. Type this into the console: tpt.register_step(function(i) for i in sim.parts() do if sim.partProperty(i,sim.FIELD_TYPE) == elem.DEFAULT_PT_TRON then sim.partProperty(i,sim.FIELD_Y,sim.partProperty(i,sim.FIELD_Y)-1) end end end) 3. Place some TRON.