How the Door works
Doors open and close as blocks are cleared. A block can only pass while the door is open.
It is one of the core obstacles you meet through the early and mid levels, usually alongside plain colored blocks and simple gates.
How to play around it
Watch the open window and be ready to send a block through the moment the door swings open.
Like every obstacle in the game, the door never makes a level impossible. Every board can be finished without boosters, so if a route feels blocked, the answer is usually the order in which you clear the other colors, not the obstacle itself.
Where you meet it
The Door typically starts appearing around Level 75 and stays part of the rotation from that point on. Boards that feature it become more frequent as the level numbers climb.
See it in action on the Levels 51–75 walkthrough index, or browse every mechanic on the mechanics guide.
Door FAQ
What does the Door do in Color Block Jam?
Doors open and close as blocks are cleared. A block can only pass while the door is open.
How do I deal with the Door?
Watch the open window and be ready to send a block through the moment the door swings open.
Which levels have the Door?
It typically starts appearing around Level 75 and is used more often as levels get harder. Open the level walkthrough index to find a video for the exact board you are playing.