Stacking Crates As A Free Fun Time Waster?

I'll admit that stacking crates does not sound like a lot of fun. Actually, it sounds like a lot of work. Never fear, however, as you will be stacking virtual crates in these free online flash puzzle games.

Read about Assembler and Assembler 2. The first one is almost too easy, and you may find the second version quite a bit more challenging.