Orcs Must Die! is a game predicated on player choice. The individual choices that each player makes about where to setup traps and where to fight will mean success or epic failure in every round. To highlight this fact, I developed a walkthrough trailer that used YouTube’s (now defunct) linking system to play segments of a level, stopping at each critical juncture to let viewers choose what would happen next. The final trailer featured nearly 30 possible playthrough routes for viewers and demonstrated key game mechanics in innovative ways.