Step 1: Need

Lego,led and lithium battery

Step 2: Case

You need an 8 by 10 base and build it up as seen

Step 3: Top and Fake Buttons

Put the top on using these blocks then put 2 blue blocks down each hole not the top right one

Step 4: The Bomb Button

Without losing your sanity put the led though the hole in the side make sure it has a hole in the side then put the battery in so the bottom is touching one led leg but the other is not then put one blue block down the last hole and
vwala you have done it ask a friend to play if they push all the fake buttons they win if they push the real button the led lights up and the goes of and they lose