old games based on the same characters. For proof, look no further than the always interesting Video Game Price Charts blog, which shows a distinct and recent uptick in the selling prices for older games based on the Speed Racer, Iron Man and Indiana Jones franchises. Never mind that these games aren't directly related to the new movies, or that the games are universally awful (well, almost) -- once that old clunker of a game gets attached to a hot new movie, the asking price can get inflated by up to 170%.
We can almost see the logic behind the increased demand, from the average consumer's perspective. After all, why waste $50 on the crappy new Iron Man game that junior is begging for when you can pick up a crappy old Iron Man game for half the price (even after accounting for the recent uptick). The little punk won't know the difference anyway, and the game will get him out of your hair so you can get back to having an affair with the pool boy. It's win-win!