I'm buying all 3, already have HOTD overkill. I think that the conduit will sell great, hotd will sell good, and I think madworld will do alright.
Numbers LTD.
Hotd Overkill: 1 million
The Conduit: 2 million
Madworld: 500k
Thats being optimistic. I think if anything madworld will do less, and the conduit will do more. Madworld will get awesome reviews. A score like 9.5 from IGN.
Support good third party games on wii. Buy games like house of the dead overkill, de blob, madworld, the conduit and boom blox.