Ian here—
Some of this material used to be over in the “Practical Pedagogical Notes on Games” section of the site. I’ve decided to migrate it to a blog post, however, for logistical reasons.
It’s an HTML5 world out there. The plug-ins that used to define the landscape of the internet—Flash, in particular—are a dying breed.
If those previous two sentences don’t mean anything to do: Congratulations! You are like most people. This guide is for you. It is a practical, logistical resource to take a peek at when a browser-based game doesn’t work.