MECHANIC LIBRARY
Block Out obstacles
Verified rules, board priorities, failure modes and the published levels they affect.
obstacle
Block generators: the board keeps growing
Generators spawn new blocks over time, so a board that looks open can fill up if you only react instead of clearing.
obstacle
Color shutter: a color-gated obstacle
Color Shutter is a color-gated obstacle introduced in Version 573 that opens or blocks passages based on color conditions.
obstacle
Connected blocks: linked pieces move as one
Connected blocks are linked, so moving one shifts its partner and changes how you route either color.
obstacle
Duration blocks: clear them for a timed power
Duration Blocks were introduced in Version 318; clearing them activates a special power that lasts for a limited time.
obstacle
Ivy obstacle: reveal covered doors
Ivy covers exit doors until block clears trim it away, so routing decisions must account for exits that are not available at the start.
obstacle
Moving elevators: time block transfers between lanes
Elevators carry blocks between lanes on a cycle, so a clear route can close the moment a piece is lifted away.