Released in celebration of the 20th anniversary of the hugely influential Nintendo Entertainment System console (which first appeared in Japan as the Famicom, in 1984), the "Classic NES Series" of Game Boy Advance cartridges present accurate versions of original NES games, for play on the handheld.
Donkey Kong for the NES did a remarkable job of capturing nearly everything that made the 1981 arcade game great. The graphics are an almost exact reproduction, and the sound is nearly perfect. The timing and speed of characters and objects also matches up well. The omission of the conveyor belt level is the only significant difference.