Corrected entry: The Indoctrination alien that meets Alex is Heather Locklear in an uncredited role.
Corrected entry: While playing the game, Alex repeatedly shoots down the same group of Kodan fighters - the same in-game shots are repeated. The easiest to spot are two fighters that come from the left side and are destroyed simultaneously.
Correction: In a video game, there is nothing wrong with using the same action scenes (especially in one of that vintage). Also, since the action scenes are being reused in game, there is nothing to say Alex couldn't be shooting the fighters in the same manner. Good gamers get in a rhythm.
Corrected entry: When Alex Rogan is first taken to Rylos he is given a device that allows him to understand all the various aliens he encounters on his adventures. However, at the end of the film when Alex and his alien pilot, Grig, return to earth Grig carries on conversations in english with all the residents at Alex's trailer park.
Correction: When Centari came to earth he spoke English to Alex just fine without a translator. He and Grig worked together on Rylos so its likely he spoke English too.
Correction: The actress who plays the Rylan who greeted Alex is Charlene Nelson and is credited as such.