TSR's Super Smash Bros Thread|SWITCH HYPE TRAIN NOW BOARDING

[Terminal Devastation]

I really cannot imagine it's impossible to have Ice Climbers on the 3DS. It's seems tricky, but not impossible.

The Ice Climbers are one playable Popo and one computer-controlled Nana (with "Tails AI"). Four players at once playing Ice Climbers means that there are four playable Popos with "Nana" AIs that the game has to handle independently. On top of that, each one has to be rendered by the game's graphic processing.
It's definitely technical issues ):

The "trick" they used to make Duck Hunt work is that the duck, at no point separates himself from the dog model - they are actually rendered as one character onscreen the whole time. If you notice very, VERY closely in people's screenshots of DHD, you'll notice that the duck's feet are actually part of the dog's texture.

I"m pretty sure the Ice climber issue has nothing to do with the modeling rendering and everything to do with the AI behind the model. (Unless that fur of theirs is really intensive coding)

Duck hunt's dog and Duck would take nearly identical space for a single model as two separate models, save for a few polygons where the duck touches the dog. They are, however, likely treated as a single object by the code. Which means the CPU can just run a single check on the "character" rather than two identical checks on the duck and dog individually. In other words, Duck hunt would have worked just fine without that trick. Still saves some space so that they can stuff even MORE stuff in.