The best place to go to find a good deal on Game Boy SP games is Amazon. They have a range of cheap Game Boy SP games available, new and used. You can also find some cheap Game Boy SP games at Lukiegames.
I would say you find city games at Game Stop.
Depends Flash games are .fla
One would find a good description of what the Orbital game is about on their official website which is Orbital Game. One can also find what the game Orbital is about on websites like Armor Games, iTunes, Addicting Games and many more.
Production of the Game Boy Advance SP has been discontinued and can no longer be found new. However, there may be independent game stores that deal with "retro" video games and game consoles which you can find a used one at.
For any video game, especially within the universe of Star Wars, I would go to Amazon.com to find a wide library of games for multiple platforms. Another great resource for games is www.half.ebay.com where you can find a wide selection of new and used games.
You can find free truck driving games on the computer at www.gorillaarcade.com/racing. Or if you would prefer to purchase a game you could find a truck driving game at GameStop.
in independent gaming stores that deal with a lot of classic games or as a best bet eBay or amazon
go to game
It is better to trade unused games for game you will be using but a lot of times game stop and Hastings or were ever rip you off. It is better to find a friend that wants the game and sell it for a fair price
There are many games that a three year old would understand. The best way to find games is to go to the toy store and check on the side of the game. The ages for which the game is appropriate should be listed on the side of the game. This should allow you to find a game for your three year old.
You would Probaly be able to find highlights of the games on the internet or if you know the dates of the game you would be able to find it online.
I would recommend Wikipedia for the history of the video games and Zelda wiki for the in-game history