The author describes it as "just a simple game I've made to help me try to learn HTML5 game development" and it's got some nice touches to it. It's an overhead mini golf game but you have to simulate actually pulling back and hitting the ball and then walking your golfer to take the next shot. It can be a little easy to over-hit the ball given the small game size but it's a great first attempt for sure.
Mortal Mini Golf
An overhead mini golf game with some nice touches.