is it possible to get an html5 version?
I decided after reading your comment to attempt to port the game to HTML5 with WebGL. The issue that I had encountered that stopped me from initially building a WebGL version was an issue with debug physics code that was not being used. I was able to, after removing this code, build a version for HTML5!
The graphics are not quite as good due to inherent limitations of the WebGL version of Panda3D, though it works! Please let me know if you have any questions!
What type of issues are you having on your laptop? It's kind of a resource intensive game due to the terrain being 100% procedurally generated. What type of laptop and what browser are you using.
Are you simply looking to just play the game or are looking to put in on your website? I would be willing to make a version tailored to lower end machines if you are interested.