Japanese
CAUTION:
I'm really not good at English, so there can be wrong, impolite or childish expressions.
Run onekeypuzzle.exe.
First of all, you push Z or X key to choose the language.
In case you want to change it again, delete language.txt.
■ TITLE

Space key:Start a game.
Arrow key(right or left):Change the level(maximum is what you've reached).
■ GAME
First, you see a group of red blocks called the lock, and it goes out of the screen turning 180 degrees.

Next, you see a one of blue blocks called the key, and make a quadrilateral with this and the lock.

By hitting Space key, you can put on or take off a block on the CURSOR.
Every about second, the CURSOR move from left to right. To watch the TIMER which is a bar under the cursor, you can see when the cursor will move.
If you hit Esc key, you will give up the left operation.

On a level, if you make five quadrilaterals, the next level will come(until level 18).
The game continues unless you make a wrong key.