Originally Posted by Maledictus
That is not necessarily true. If an expansion generates enough buzz and introduces enough new stuff it might actually cause people who had not bought the original yet to buy the original plus the expansion. I've seen this happen. So you have the people who have the original that will likely buy the expansion, and sales for the original might pick up because it's been 'freshened up' by the expansion.
That's a really good point. I myself only found DC because the expansion made people in forums and fidgit discuss it again. Also, an expansion might be better than a sequel money-wise since a DoP sequel would make the original DoP obsolete, while an expansion would, as you say, make people buy the original too. Also, people demand a LOT of new stuff for a sequel, and small studios like Soldak need to recycle their assets (models, textures, animations) as much as they can to reduce the costs, which IS acceptable for expansions. So now I think Shadow should perhaps consider porting DoP back to the DC engine. Doing so would allow adding at least basic multiplayer, and the dungeons could probably use Din's dungeon engine fairly easily (though with only 1-2 levels). That could be a mini-expansion.
A sequel might be a better fit for a game like Kivi. The casual direction wasn't so successful, and perhaps Kivi can be taken in other directions, like having procedural plots or maybe even starting to build parts with a turn-based engine.