if a level initially contains an "ON" light-switch, only invisible tiles after it in scanning order are revealed

[ncrecc]

this is an interesting one. can be seen in Contributions 2002 Gerrit Holl & Timen V. D. Berg 021 - Dynablaster III.

in editor:

dynablaster - in editor.png (49.22 KiB) Viewed 53 times

ingame:

dynablaster - ingame.png (31.98 KiB) Viewed 53 times