The player manipulates the character and obtains the three keys placed on the stage.
If you get 3 keys, the level is complete, and if you fall off the stage, it's game over.
There is a floor on the stage that activates a gimmick when passed.
There are several types of gimmicks.
For example, traps that fall on a timed basis, and support for players collecting gems.
Complete levels while collecting gems.