Db cd door bonus for Tunnel Runner - Atari 2600

• Db cd door bonus

Starting on level 9, the player starts encountering doors with the initials db cb on the sides of the door. Bonus points start to accumulate, but only upon the first time the player faces the door: the moment they check the map or turn in another direction, the bonus points will stop and they will not restart. So make sure not to move or check the map when first approaching one of these doors. | Submitted by DarrylB.

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