Children's Jumbled Sound Game II

I am looking for someone to finish up this project: [login to view URL] In the original game design, which you can see on the URL above in a not finished version, there are 8 randomized objects that appear. Each has a sound but it belongs to another of the 8 objects (it could be for example that the dog sounds like a car). However we found that the interaction became quite complicated and are now looking to make two smiliar but simpler games, using the same landscape and animations. They are described in the attached document. In short, we still want there to be 8 randomised objects on the landscape, so that some of the already built in functionality is still going to be [login to view URL] the first version everything is silent and we are prompted to attach the sounds we hear to the right objects, one a the time. In the second version everything has a sound but two of them are incorrect. It is our task to find those two things. When we find a wrong sound we press a blue button to indicate that. Please answer with what it would cost to make these games with you and how long time it would take. My estiamte is 2-7 days and cost around $50-150, depending on what country you're in. Best, Jens