This is an action puzzle game.
This game is easy at first, but it is very difficult in the middle.
This original game was popular long ago.
We reformed stages and images completely.
This game is derivative work.
If you take the key and reach a door, you can clear the stage.
For more information, please select "Guide Mode" in the game.
You can select from 5 image sets.
In addition, if you install "R1 Append Pack",
3 image sets are added, and you can select from 8 image sets.
For more information, see below "R1" Android version official site.