Skyrim is probably, what, 10GB roughly? You can get 16GB micro SD cards (which are phsyically much smaller than the cartridges appear to be) on Amazon for $7,

Skyrim is probably, what, 10GB roughly? You can get 16GB micro SD cards (which are phsyically much smaller than the cartridges appear to be) on Amazon for $7, and double that size for about $10.