Corrected entry: In the scene where Danny goes into his dad's office, he says that he's ready to play "Smash Bros". The only problem is Smash Bros. is a Gamecube game and Danny is holding Playstation controllers. Later, when Walter and Danny are watching TV, a Playstation 2 is there, but a Gamecube is nowhere to be seen.
Corrected entry: In the scene where the game ejects Walter for cheating, the astronaut shoots into space and grabs onto Walter and brings him back into the house. Later when its revealed that the astronaut is really the older version of Walter they touch and the astronaut is "absorbed" back into Walter. Shouldn't that have happened when they first touched?
Corrected entry: After the meteor shower, the brothers make a big deal of discovering that the shower only affected the living room. However, considering that everything else from the game affected the whole house, there's no particular reason from the logic of the movie alone that the shower only hit that one room. Keep in mind that after the shower when the boys look outside, the whole house is shown flying through the meteor-filled ring of a planet, making the 'living room only' shower even more surprising. Wherever the writers were going with this idea, it's left unexplained.
Corrected entry: Many non-scientific effects happen outside the house, most of them acceptable due to nature of film. However 'passing too close to the star' would not cause parts of the house to fall inwards as the house is in free-fall (in reality at that distance the characters would be roasted). Other examples: sofa burning in space, Zorgon ships turning without use of steering rockets although they use rockets to power the ships. Oh and where did the astronaut get his space suit from? Finally with regards to meteor shower. Big hole appears in roof from last one but there should be many small holes in the roof and upstairs floor from the little ones - but there aren't.