When I first saw the teaser trailer for Exit 8, I was cautiously optimistic; original high-concept films like this scratch a special Cube-shaped itch that I'm a sucker for. But when my teenage son saw it, he immediately recognized it. He pointed out that it was based on The Exit 8, a four-dollar indie tech demo on Steam that went viral on Twitch a while back. He explained the whole concept to me: you walk down the same sterile, yellow-tiled Japanese subway corridor over and over again. If you notice a weird anomaly like a poster expanding, a light flickering, or a creepy guy sprinting at you, you turn around. If everything looks normal, you keep walking until you hit Exit 8. That is the whole thing. It takes about forty minutes to finish, and half the fun for his age group is just watching streamers jump out of their chairs when a door disappears. On paper, taking a four-dollar memory game with zero plot and stretching it into a feature-length film could easily look like a cheap gi...