Anchoring/Unanchoring

Normally blocks, such as a gray block for example, are affected by gravity unless it is anchored. Anchoring refers to a blocks ability to withstand gravity and is usually only able to to be anchored if connected to a pre-anchored block such as terrain. Once the bond between a block or structure and an anchoring block is lost said building will fall.

Placement bond types
When placing blocks, to know if you are fully connecting blocks, look for the white outline of the faces touching each other from block to block hologram.

White = fully connected and safely considered as one object

Blue = Connected as one object but parts aren’t actually touching because of a save bug or placement positioning or rounding error.

Red = Cannot be attached

List of pre-anchored blocks
Terrain

Health Pack

One-Way Door

Toilet

Door

Double Doors

Computer

Storm Drain

Streetlight

Grill

Flowers

Dumpster

Castle Door

Ceiling Light

Flight Seat

Sword Giver

Rocket Giver