After watching a lot of videos, I figured that House of the Dead: Overkill is an excellent game. I always knew that MadWorld was excellent but now I know that House of the Dead: Overkill is great. It is just said that they are not getting the sales that they deserved.
This was my prediction on good sales for both games:
MadWorld - 650k
House of the Dead: Overkill - 800k.
I just have to say. Please go out and buy both or atleast either of these games. Sega delivered 2 of the best hardcore games on the Wii this year and you have to support them than any other company. Not because they need the money but because the games are actually good enough that they DESERVE your money.