 Rather than use NES technology, "Mega Man 9" runs on a new, proprietary engine that simulates the behavior of 8-bit video games.The game even includes "Legacy Mode", which emulates the low video processing power of the NES by partially rendering sprites, thus causing them to flicker when too many are on screen simultaneously.The developers also considered distributing the game on NES cartridges, but without technology to bridge the gap between the cartridges and current gaming hardware, the idea was scrapped.