I tried this on a "netbook-like" HP laptop with 11" 1360x768 screen that I bought for $499 last year. The keyboard is compact so it doesn't have a numeric pad, not even with some sort of "Fn" shift. The number key directions didn't work. Arrow keys work but that fact is not in the manual, and there is no diagonal keys if you don't have 1,3,7,9.
On the other hand, the graphics worked fine. The blue line for the feedback part of the "Go" command was ugly. The laptop has no discre(et|te) graphics, just what comes in the mobile Pentium it runs on. So the warning about compatibility might be overly strong.
The vertical aspect of the mountains is tricky. It adds an unnecessary challenge to lining up a worker with a mine or what have you.
There are clearly some aspects that apply to both the WebGL and HTML5 versions, so I have tried to focus on the WebGL side in these remarks.