Simple Happiness

I don't understand why these simple blocks can be fun,

 

Until I played with them..

 

 

Simple rules for the game.

1. Dropping the block onto the table, will be penalise to take another one
2. Can't take blocks from the upper 5 rows.
3. Can only use 1 hand to pick one block at once.
4. Arm on the table is strictly prohibited.

 

:)