NES on GameBoy Advance
If you don't have an NES, GBA can be the next best thing. Even if you do have an NES, GBA is probably the best option to make a good number of NES (and Famicom) games portable (no GameAxe required)
The GBA is compatible with a lot of stuff, including all GB games, GCN, e-Reader, etc and these provide great possibilities for legitimate NES portability.
I've tried to compile all the NES-to-GBA ports here, for my own reference, for posterity of course, and also to see if anyone has input on anything I missed or am not aware of. Any input would be great!
Via GameBoy Colour;
Super Mario Bros (Deluxe)
Shadowgate
Deja Vu and Deja Vu 2 (unreleased on NES 
)
Dragon Warrior 1 and 2
Dragon Warrior 3
Via GameBoy Advance;
Capcom Classics Mini-Mix (Mightly Final Fight, Bionic Commando, Strider)
Metroid (on Zero Mission and Fusion carts)
A Japanese import I am aware of that has Adventure Island 1-4
Via e-Reader peripheral;
Balloon Fight
Baseball
Clu Clu Land
Donkey Kong
Donkey Kong Jr
Donkey Kong 3
Excitebike
Golf
Ice Climber
Mario Bros.
Pinball
Tennis
Urban Champion
Via GBA Classic NES Series;
Super Mario Bros
Donkey Kong
Excite Bike
Ice Climber
Legend of Zelda
Bomberman
Pac-Man
Xevious
Castlevania
Zelda 2: Adventure of Link
Dr Mario
Metroid
Via Japanese Famicom Mini Series;
Super Mario Bros.
Donkey Kong
Ice Climber
Excitebike
Zelda no Densetsu
Pac-Man
Xevious
Mappy
Bomberman
Star Soldier
Mario Bros.
Clu Clu Land
Balloon Fight
Wrecking Crew
Dr. Mario
Dig Dug
Takahashi Meijin Bouken Shima
Makaimura
Twinbee
Ganbare Goemon! Karakuri Douchuu
Super Mario Bros. 2 (Lost Levels)
The Mysterious Castle of Murasame
Metroid
Kid Icarus
Zelda II: The Adventure of Link
Shin Oni Ga Shima
Famicom Detective Club
Famicom Detective Club Part II
Akumajou Dracula
SD Gundam World: Scramble Wars
Super Robot Wars 2
Comments
Are they the same version as the NES releases?