Just throwing the powerpoint I used for this game up! It's a very versatile activity, but if you need to change the grammar point, detailed directions for slide 3 are below.
Open the Objects window on your PowerPoint.
(If you're using PPT in Japanese:
ーclick on any image, then go to 図の形式.
All text boxes are labeled as "text box", then the sentence; you will probably want to change the text in the following objects, depending on your grammar point.
ーtext box 1: do you want to take my bomb?
ーtext box 2: no, i don't
ーtext box 4: do you want to take my bomb?
ーtext box 5: yes, i do...
The PowerPoint got a lot of laughs from my classes, so I hope yours enjoy it too! Have fun and hope your kids don't go too insane!