Perhaps more than any other medium, video games are constantly being delayed or abruptly canceled. It’s heartbreaking to see a highly anticipated game miss its original release date, but the development hell that unfolds behind the scenes is even worse.

When Super Smash Bros. hit store shelves in 1999, there weren't many games that let you see all your favorite characters in one place. Today, crossovers are a routine part of nearly every gaming genre. This sudden surge in crossovers isn't just a sign of their popularity, but also the result of a much larger trend.

Many game consoles have at least a few features that go unnoticed by most players. In rare cases, some of these features never even see the light of day, even if they are already built into the hardware.