We now know that Nintendo is serious about their digital push. We're going to start seeing retail titles pop up digitally on both the eShop and the Wii U's online shop. That had Nintendo-Gamer wondering just how big current Wii and 3DS games are. Check out some size comparisons below.

Sizes in GB from biggest to smallest:

Metroid Prime Trilogy – 7.45
Metroid: Other M – 7.28
Super Smash Bros. Brawl – 6.77
Xenoblade Chronicles – 5.98
The Legend Of Zelda: Skyward Sword – 4.09
Punch-Out!! – 3.66
Fire Emblem: Radiant Dawn – 3.59
Kirby’s Epic Yarn – 3.59
Wario Land: The Shake Dimension – 3.55
Donkey Kong Country Returns – 3.34
Super Mario Galaxy – 3.28
WarioWare: Smooth Moves – 3.27
Mario Kart Wii – 2.60
Mario Sports Mix - 2.30
PokePark Wii – 2.03
New Play Control! Pikmin – 2.00
Wii Fit Plus – 1.92
Mario Strikers Charged – 1.84
New Play Control! Mario Power Tennis – 1.46
Mario Super Sluggers – 1.41
Mario Party 8 – 1.38
Super Mario Galaxy 2 – 1.30
Pokemon Battle Revolution – 1.24
Kirby’s Adventure Wii – 1.19
Big Brain Academy: Wii Degree – 1.19
The Legend Of Zelda: Twilight Princess – 1.09
Wii Party – 1.02
Mario Party 9 - 0.95
Sin & Punishment 2 - 0.91
Wii Sports Resort – 0.83
Boom Street - 0.74
Excite Truck – 0.71
Wii Sports - 0.63
Wii Play Motion – 0.63
Rhythm Heaven Fever (US) - 0.45
Super Paper Mario – 0.41
New Super Mario Bros Wii - 0.36
Animal Crossing: Let’s Go To The City – 0.33
Wii Music – 0.29
Wii Play – 0.23
Link’s Crossbow Training – 0.23
Super Mario All-Stars – 0.03

Size in GB from biggest to smallest:

Resident Evil: Revelations – 3.17
Kid Icarus: Uprising – 1.61
Resident Evil: The Mercenaries 3D – 0.67
Mario Kart 7 – 0.66
Star Fox 64 3D – 0.63
The Legend Of Zelda: Ocarina Of Time 3D – 0.47
Nintendogs + Cats – 0.46
Pokemon Rumble Blast – 0.33
Super Mario 3D Land – 0.31
Steel Diver – 0.18
Pilotwings Resort – 0.10

Obviously, some smaller games on the 3DS and beefier ones on the Wii. If you're going to be downloading Wii U titles, be prepared for some of them to take a good amount of time!