The rules are simple, but there are a few special parts that I will explain.
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1. The bricks (dumbbells) that you place do not disappear when you clear a level. If you place them randomly, you will be stuck in the next level.

2. You can control your brick while other bricks are falling. Therefore, you can get underneath and erase other bricks (dumbbells) while they are falling. 3.

3. Some bricks (dumbbells) are only on one side. The second half of the game is much easier if you can use them well.
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I've made it to level 10 now!
I'm planning to add new special stages, new gimmicks, collectibles, etc., so please play a lot if you like.

Good Luck!