Continuity mistake: In the scene where Juni finds Carmen in Level 4, they are on a cliff. They begin crossing a virtual bridge, then in the next shot, they are back on the cliff.
Continuity mistake: When Juni protests that he can't beat Arnold in Level 3, Juni has a silver plate on his life count. It wasn't there before the battle, and after that shot it disappears.
Continuity mistake: When the programmers are teasing Juni, you see Grandpa in the mist. When Grandpa picks the programmers, you can see the camera move slightly. In other words, you can see that it is 2 different shots.
Continuity mistake: When Grandpa picks up 2 of the programmers and makes them appear as they really are,in the next shot,the 2 he picked up are standing behind juni,and 2 different kids are in his arms.
Continuity mistake: At the end of the movie when you see everyone put their hands in & say, "To Family", the Toymaker says, "Aaaaaand, BREAK.". If you pause it when R.A.L.P.H is hurdled into the air, you can see that half the people are gone.
Continuity mistake: When Juni lifts the fishbowl with the miniaturized sharks in it and says "Ralph, write a thank you note to Romero" the bug picks up the pencil and draws a line on the pad of paper, the spider monkey then interrupts him and the bug and the spider monkey are fighting with their implements, they show the pad in the foreground of the fight and the line has now disappeared from the paper.
Continuity mistake: During the scenes in the real world after they have come out of the game, Juni and Carmen give glasses to their dad who is in front of them, but in the next scene he runs at the giant robot and Juni and Carmen are nowhere to be seen. This happens a lot with other characters throughout this section of the movie.