178 route: Play in odd step. Move 2L 2U 2L 6U 8L D  2R 3D and along the ‘staircase’. Collect the chips in the top-right corner of this room, and exit via the ice ‘window’ to enter the roof via the ‘chimney’. Collect the chips to the right (waiting for the gliders before collecting the last 3), then move across to the left and collect the remaining 5 chips). Go back into the house via the ice window, collect the remaining chips in this room, wait for the paramecia to clear the staircase, and go downstairs. Go through the yellow door and collect the blue key underneath the furthest movable block. Come out of this room, collect the remaining chips, go back upstairs and through the blue door. Collect the remaining chips (under the blocks), go back downstairs and through the socket. Wait for the bugs to clear the exit, and exit.