It says "gameplay visualization" at the very beginning of the video, which means (if you could not already tell) it is a pre-rendered video. I don't doubt the studio's ability to execute on this, but I think they are actually asking for too little. A twenty person team could probably create a game like this in 2-3 years, with luck, which would probably cost about $4-6 million (and that is actually quite a low budget). Hopefully they get over-funded. :)