I know this thread is old but... I have some updates that are relevant and missing from the thread up to this point. If for no other reason than to document this obscure contest from the 90's.
I definitely remember this contest and to this day it is one of my better experiences as a kid. To this day I'm honestly impressed that I received a free game console and games just for playing. I honestly never thought I would find information about it online, and somehow through some mystical Google-Fu I found this thread.
After reading through the thread and getting some tips, I finally found a copy of the contest. Having grown up in the Pasadena area in California, I presumed that the contest was seen in the Los Angeles Times newspaper. Then it was a matter of narrowing down the time frame then researching the LA Times archives. I signed up for a free trial just to find this.
I found it in the Sunday comics section of the Los Angeles Times from Sunday, August 19, 1990. You can view the entry form I found via this link:
https://latimes.newspapers.com/article/the-los-angeles-times-tg16-contest-1990/163151719/Here were the questions from the contest:
1) In "Super Mario Bros. 2", what is the name of the fifth character that scrolls by in the ending credits? [Tweeter, Beazo, Ninji, None of the above]
2) During the ending screen in "Double Dragon", what side of the screen is the plant on? [Left, Right, Middle, Left and Right]
3) In "Mike Tyson's Punch-Out", what is the name of the secret playing circuit? [Another Professional Circuit, Another World Circuit, Another Galaxy Circuit, None of the above]
4) In "Legend of Zelda", what is the weapon you must use to defeat the evil Gannon? [Silver Arrow, Magic Wand, Silver Ring, None of the above]
5) In "Castlevania 2: Simon's Quest", during one of the color endings, identify the last word in the ending message: [Thunder, Force, Three, Curse]
6) The Hit Game "Bonk's Adventure" is only available on TurboGrafx-16. [True, False]
The TG-16 was and is my favorite game console of my childhood, other than PC. It was much more reliable than the Nintendo, where I remember slamming, kicking, hitting, licking the contacts of the game cartridges to get them to read correctly. The credit card sized game "cartridges" were ahead of their time.
Thanks to the previous posters who provided key details. Also impressive that someone still had ANY portion of the original advertisement (NightWolve).