I just added a RULES slide to the Hidden Picture Game, which helps explain it to the students without having to start the first picture. The rules include instructions to draw a random number, so I'm also attaching my number cards template and the "obfuscation page" that I printed on the back. I then cut out the cards, laminated them, and cut them out again. Also works great for choosing a random student or students to answer questions/practice dialogs.