Blue wall

A blue wall (closer to a teal-blue hue in the MS version of CC1 despite its official name) is a tile that can take on one of two indistinguishable possibilities:

• Fake blue walls, which act as dirt: Chip will turn it into floor when he attempts to step through it, but while it exists, Chip cannot push blocks over them and monsters cannot pass them.
• Real blue walls, which turn gray when Chip pushes on them, identifying them as walls.

The only way to find out whether a blue wall is fake or real is to attempt to step through it, or, of course, to look in a level editor or at a map. All level editors feature an option to either hide the identity of all blue walls, or to show them as what they actually are; in CCEdit and CCLD, when the option is turned on, fake blue walls are shown as translucent teal squares while real blue walls are shown as wall tiles tinted with a teal hue. By contrast, ChipEdit's "Show Blue Walls" option displays all blue walls as outright wall or floor, which makes a level more difficult to play when blue walls interact with monsters or blocks, but makes blue wall mazes such as Mishmesh, Chipmine and How Goes? much easier to read.

See also

• Green wall