http://www.nintendo.com/eshop/offers/?gid=20140904SuperSmash
Looks like they're holding a four week sale on various 3DS and Wii U titles based on Super Smash Bros characters.
Week 1 9/4 - 9/11:
Super Mario Bros 3 (3DS/Wii U) - $3.49
Super Mario Bros 2 (3DS/Wii U) - $3.49
New Super Mario Bros U (Wii U) - $39.99
Super Mario 3D Land (3DS) - $19.99
Super Mario 3D World (Wii U) $39.99
Yoshi's New Island (3DS) - $29.99
Punch Out!! Featuring Mr. Dream (3DS/Wii U) - $3.49
Week 2 9/11 - 9/18:
Games based on The Legend of Zelda, Fire Emblem, Kid Icarus, F-Zero, Mega Man, and Sonic The Hedgehog
The Legend of Zelda™: A Link Between Worlds (3DS) - $29.99
The Legend of Zelda™: Oracle of Ages (3DS) - $3.99
The Legend of Zelda™: Oracle of Seasons (3DS) - $3.99
The Legend of Zelda™: The Minish Cap (Wii U) - $4.99
The Legend of Zelda™: A Link To The Past (Wii U) - $4.99
F-Zero (Wii U) - $4.99
Fire Emblem: Awakening (3DS) - $29.99
Sonic the Hedgehog (3DS) - $3.49
Mega Man (3DS) - $3.49
Mega Man 2 (3DS) - $3.49
Mega Man X (Wii U) - $4.99
Mega Man X 2 (Wii U) - $4.99
Kid Icarus (Wii U) - $3.49
Kid Icarus: Uprising (3DS) - $24.99
Week 3 9/18 - 9/25:
Games based on Pokemon, Metroid, Wii Fit, and Miis
Pokémon™ Battle Trozei (3DS)
Pokémon Rumble U (Wii U)
Metroid™ (3DS/Wii U)
Wii Fit™ U (Wii U)
Week 4 9/25 - 10/2:
Games based on Donkey Kong, Kirby, Pikmin, Star Fox, Pac-Man and Animal Crossing
Animal Crossing™: New Leaf (3DS)
Pikmin™ 3 (Wii U)
Donkey Kong Country™: Tropical Freeze (Wii U)
PAC-MAN™ and the Ghostly Adventures (3DS/Wii U)
Edit: Added rumored future week sales thanks to Zeeman
Looks like they're holding a four week sale on various 3DS and Wii U titles based on Super Smash Bros characters.
Week 1 9/4 - 9/11:
Super Mario Bros 3 (3DS/Wii U) - $3.49
Super Mario Bros 2 (3DS/Wii U) - $3.49
New Super Mario Bros U (Wii U) - $39.99
Super Mario 3D Land (3DS) - $19.99
Super Mario 3D World (Wii U) $39.99
Yoshi's New Island (3DS) - $29.99
Punch Out!! Featuring Mr. Dream (3DS/Wii U) - $3.49
Week 2 9/11 - 9/18:
Games based on The Legend of Zelda, Fire Emblem, Kid Icarus, F-Zero, Mega Man, and Sonic The Hedgehog
The Legend of Zelda™: A Link Between Worlds (3DS) - $29.99
The Legend of Zelda™: Oracle of Ages (3DS) - $3.99
The Legend of Zelda™: Oracle of Seasons (3DS) - $3.99
The Legend of Zelda™: The Minish Cap (Wii U) - $4.99
The Legend of Zelda™: A Link To The Past (Wii U) - $4.99
F-Zero (Wii U) - $4.99
Fire Emblem: Awakening (3DS) - $29.99
Sonic the Hedgehog (3DS) - $3.49
Mega Man (3DS) - $3.49
Mega Man 2 (3DS) - $3.49
Mega Man X (Wii U) - $4.99
Mega Man X 2 (Wii U) - $4.99
Kid Icarus (Wii U) - $3.49
Kid Icarus: Uprising (3DS) - $24.99
Week 3 9/18 - 9/25:
Games based on Pokemon, Metroid, Wii Fit, and Miis
Pokémon™ Battle Trozei (3DS)
Pokémon Rumble U (Wii U)
Metroid™ (3DS/Wii U)
Wii Fit™ U (Wii U)
Week 4 9/25 - 10/2:
Games based on Donkey Kong, Kirby, Pikmin, Star Fox, Pac-Man and Animal Crossing
Animal Crossing™: New Leaf (3DS)
Pikmin™ 3 (Wii U)
Donkey Kong Country™: Tropical Freeze (Wii U)
PAC-MAN™ and the Ghostly Adventures (3DS/Wii U)
Edit: Added rumored future week sales thanks to Zeeman