WOW! Nice work on those games.
If you ask me I think you can surely earn some money with Lost in the Dark. From the quick look the gameseems to have a uniqe approach which is always good. And if you manage to add interesting puzles levels and a nice storry you are a winner.
As for the other two it is still posible for you to earn some money with them but since there are many similar games on the market already you will have to polish them realy good to compeete with other. At least that is my opinion.