Hey, remember the good old days, when technology's refusal to advance at a rapid enough pace effectively handcuffed all the fun you could have had as a child to a radiator and forced you to play outdoors instead like some kind of freak show? If not, this will help ...
An Entire Duck Hunt Cartridge Could Not Hold Half of One Level of Angry Birds
With a download size of 19.4 MB and 345 levels, a single level of Angry Birds averages out to roughly 440 Kb. There is likely to be some variance, of course. The levels that make you want to hurl your iPhone through a bus window are probably a bit bigger. At any rate, not even half of one those levels could fit on the paltry 192 Kb that held the entirety of the Duck Hunt universe.