When a brilliant supervillain finally falls, his technology and artifacts don't just melt into the aether. Okay, sometimes they do, but most of the time? They leave a lot of ray guns and death bombs and suits of powered armor just lying around. Sometimes some of that stuff finds its way into the black market, but the authorities are pretty good about confiscating most of the most interesting dangerous stuff.

Of course, it's not all death machines and nuclear robots. Suprevillains have a bunch of fun toys too, like suped up jet skis, instant espresso machines, and flying roombas. The stuff that's not dangerous usually goes to police auction.

That's where you guys got The Box. Somehow somewhere along the line, somebody messed up. See, what you thought you were getting was some kind of suped-up hyper def television. What you really got?

Time machine. Yeah, that's right, you and your friends have a time machine. Creates a portal, you walk through, and bam, you're in another time and place. You have no idea how it works, you have no idea how to set it to send you to a specific time and place, and you have no control over when you come back, but it always sends you somewhere... interesting.

System: Homebrew, kept off the stage and behind the scenes in all but the most abstract sense. Not freeform.

Setting: Fictive. Whatever books, movies, comics, etc happened, happened. I don't want to decide the entirety of what's real before we play, but rather keep it flexible enough to say "oh yeah Indiana Jones is a real historical figure" if the need arises.