Help me with Marketing

Hi, I'm looking for someone that can create a an engaging video demonstrating my video game software. I want to create a demo video for the homepage to quickly show off the software and convince people to try the free download. [login to view URL] To be clear, I am not looking for a how-to video, but a professional marketing video that I can host on youtube and my website. Please provide samples of promotional videos that you have created in the past. Thanks