This seems similar to another game that just came out not too long ago called Sequester.
Still fun though
Reviews for "Cardboard Box Assembler"
Reminds me of Shift, very creative "Shift Like" game, but all the games you all have aren't that goodi hopes all time. :/
Flash got stuck when I completed the last level. After I forced ended the program and restarted the game ALL my progress was gone. Seeing I went OCD on the game as well and got everything perfect (under par times, crystals, bonus) until that last level. Even all the horrible levels on world 8. I suggest you make a better save system.