Capcom isn’t fooling around, they know their market for Mega Man 9 on Xbox Live, WiiWare and PSN and its nostalgic gamers with a desire to be a kid again. Any retro gamer will tell you the old school experience must include some pixel flickers, slow down and 8-bit style bugs.
They have decided to include an optional feature to enable old school bugs on purpose. The limitations of early hardware like the NES caused situations where you would only see a limited number of creatures on the screen at any one time else things slowed down, flickered and got undesirable fast. What used to be undesired is now nostalgic!
“Yeah, there were some things, like you couldn’t have more than three enemies on the screen at once, so we had to make sure that that’s how it stayed in our game. In the part with the dragon with the flame, [there should be] flickering, and whatnot,” noted the game’s producer. “In the options of this game, you can adjust that, unlike the old games. We purposely put some of those old-school bugs into this game, so it does recreate that feel.” (joystiq)
Luckily these options are disabled and can be enabled to get a bit of old world feel if your little heart desires. For most of us, we should have moved on from the old times and are ready to play old school games on new school hardware to show off a bit more fluid 8-bit logic. Not so for everyone, which is why the feature was added as an optional one.
Staying true to old school computing in an emulator is extremely important when playing old ROM games because the game was coded with a certain speed and understanding of the hardware. Change the hardware without updating the game can lead to an unusable product. Mega Man 9, however, is a new game so it doesn’t have to adhere to old standards. But, it’s funny to see it try.
Microsoft Xbox 360 Outsells PS3 and Wii 
Now here is another interesting video game for the Atari 2600, the game Dragon Fire consisted of two game screens, one which you ran across a bridge while fireballs were shot at you, you had to duck or jump over the fireball. This screen was a side-scroller style screen (although it doesn’t actually scroll), at the other end of the bridge was a castle door which you’d enter to get to the next screen.
When you finished collecting all the treasure an exit would pop up in the corner and you had to run to it without being burned by the fireballs, that dragon would turn from left to right nearly instantly too! Then, you’d jump into the exit and be back on the bridge again, but this time it was harder. You could die up to 7 times before the game was over (just to show you how hard it is, they gave you a bunch of lives).
It makes sense for Sony to try to push themselves away from being classified with the Wii console because it makes them look bad. We’re all equal gamers here, there is no need to break into more sub-categories when only three consoles vying for top spot. Many folks (including us) criticize the slow adoption rate of Wii games, yet they steal top software sales spots as well.