“I turn to page 345 – AND I KILL YOU! YOU DIE!” Eh, still sounds silly.

Round two of you and your friend trying to kill one another with gamebooks. Still sounds dumb.

Now you and your friend can sort out your differences violently.,. with gamebooks! Wait, that sounds silly.

You and a friend can now stab one another to death by flipping pages of a gamebook. Wait, that sounds dumb.