10 Things Video Games REALLY Didn't Want You To See

Spider-Man 2 has some WILD secrets.

Spider Man 2
Insomniac & Digital Foundry

Video games are developed under a greater shroud of secrecy than basically any other form of entertainment media, as publishers would prefer most players to experience a glossy, bug-free end product without seeing how the sausage is made. Fair enough.

Except, sometimes things slip through the cracks, and for better or worse players are able to catch a glimpse at some inside baseball, behind-the-scenes sights they clearly weren't supposed to see.

These can be as harmless as bugs causing unexpected phenomena in the game world, or something as potentially damaging as offensive content that was never supposed to make it into the game at all.

In most of these 10 examples, the developers moved fast to cover up their gaffes, swiftly patching these elements out of the game, confirming beyond any doubt that they weren't intended for players' eyes.

But whether they've been consigned to the void or not, each of these things are now part of their respective game's history, serving as towering, hilarious, and sometimes disturbing reminders of the ludicrous amount of work that goes into any video game. And also, how easily things can come apart at the seams...

10. A Left 4 Dead Prototype - Counter-Strike: Condition Zero

Spider Man 2
Valve & YouTube: DoomZyphon

The 1.6 update for Counter-Strike: Condition Zero released last November also added a most peculiar feature to the legendary FPS - a very early prototype of Valve's 2008 zombie-themed FPS Left 4 Dead.

The prototype, called Terror Strike, was accidentally compiled into Counter-Strike by Valve during the 1.6 update, allowing players to experience an extremely rudimentary version of Left 4 Dead's gameplay, functioning as a mod for Counter-Strike.

Using Counter-Strike assets, players must fend off a horde of AI foes programmed to attack them with the rabid ferocity of, you guessed it, zombies.

Valve didn't take long to remove Terror Strike from the game, but by this point slippery-fingered fans had already copied it and created their own unofficial Counter-Strike mod, effectively allowing it to be preserved in perpetuity.

Even though Valve evidently didn't want this early slice of Left 4 Dead's development to be made public, it's now a piece of public gaming industry they can't ever hush up, so they're better off just embracing it.

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Stay at home dad who spends as much time teaching his kids the merits of Martin Scorsese as possible (against the missus' wishes). General video game, TV and film nut. Occasional sports fan. Full time loon.