Hello, I have 12 years of experience with web development. I have just finished a large scale web application for an Australian education institution. I have the necessary skills and time to build your idea. I have built an online game before. You can check it at http://spelltest.herokuapp.com. My bid is a little over your budget, but I do top-notch work and guarantee timely delivery. If you are interested, send me a message and we can talk over details.