Revealing mistake: When fighting Gohma on Dragon Roost Island, when Link uses the grappling hook to grapple Valoo's tail, some of the rope goes through the tail as it wraps around.
Continuity mistake: In the game's opening scene, MegaMan has blue hair. In the end scene, his hair is shown as black.
Other mistake: Inferi are known to be repelled by light and fire. Many times during gameplay, Inferi will appear outside during the day when they should only appear in very dark places. They even appear inside of caves with rooms that are brightly lit by torches.
Other mistake: In Goro's bio, the term "ancestor" was used to describe the relationship between Liu Kang and the Great Kung Lao, who was born centuries before Liu Kang, despite the term that should have been used being "descendant." That was probably a translation/spelling mistake.
Bug: If your computer or connection lags too much on co-op mode, sometimes you will lose connection and be removed from the game back to the menu. Sometimes though, when the connection is lost, the screen just turns black with the spinning Pentagram at the bottom as a loading screen, but it just stays there. You are stuck. You have to close the game down and restart it.
Bug: Suburbia: In the last wave, the Patriach will often get stuck against cars and just jump in place, unable to move.
Other mistake: Zombies - Origins: On this map only, there is a power up you can get called Zombie Blood that will make the player invisible to zombies for a short period of time. When under the effects, the player cannot hear any sounds in the environment around them, no gunfire or other zombies, except their own character's voice and grunts. That is how the power up works. If playing on split screen, and the second player gets Zombie Blood, the effects happen this way as normal and the first player is not affected. However, if player one gets it, the sound is also muted on the second player's screen as well.
Bug: Use Kirby and eat Yoshi so you copy his eating ability. Then eat Yoshi to turn him into an egg. The person playing as Yoshi must quickly mash buttons and the control stick to break out. When Yoshi is free, he will be smaller. This can be done over and over again, making Yoshi smaller and smaller. He can even get as small as a single pixel.
Other mistake: If you change your class of character after you die and go back to look at your body, it will have changed to the class you are now. For example if you are playing as a Spy and get killed, then change to a Pyro and go back to where you were killed, your previous body will still be there, it will now be a Pyro.
Other mistake: After the Duo stage, ProtoMan says "What happend?" Happend should be happened.
Bug: On custom stages, if you have the springs set up, there is a glitch with them that occurs with Meta Knight's final smash. If he is in the middle of using his final smash, and any other player happens to touch a spring during that, they instantly freeze and are unable to move until the final smash is over. And it seems to somehow amplify the effects of the smash on the frozen players.
Factual error: With the special key, Claire can alter her clothes to a costume that is equipped with a Colt Single Action Army. But still she can fill it with 9mm parabellum which would be impossible.
Audio problem: In the last part of the game, if you play as Fong, Fong's voice will be the one guiding you, not Bruce's.
Bug: During the mission "Davis Unit" after I made the airborne fortress retreat, I was using a Fregeta and I managed to destroy a bridge with two tanks nearby it. The rear tank stopped as it should have, but the second tank actually drove across thin air and managed to reach the center of the gap where the bridge was. After that, it promptly fell to its death.
Factual error: Civ IV includes the famous quote from Henry T. Ford about the Model T being only available in black, this is false on two accounts; First Henry T Ford never said it or anything like it and Second the first Model T was actually green, followed by blue and orange, in fact black wasn't introduced until some years later.
Continuity mistake: At the end of the second level (Scotland The Brave) Cortez picks up a photograph of Crow and Khallos. In the next level (The Russian Connection) you see the picture being taken, and Crow and Khallos have switched places.
Factual error: Dead Kennedys don't use the article "The" in their name.
Other mistake: When talking to Admiral Onasi about Revan in the endgame, the subtitles spell the Admiral's last name 'Onassi'.