The world of blocks

This is a very realistic simulation of block world.
You can choose various types of blocks and put them on the heap.

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There are two modes in "play alone":

1)
Putting a new block on the heap

2)
Extracting a block within the heap and putting it on the top
Moreover, you can take a snapshot of your heap and display it on the net.

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You can enjoy playing against CPU. There are 3 different levels of strength.