Here are the supported browsers for DelugeRPG. Enable Javascript for better results. Try to always keep your browsers up to date. They will contain repairs for bugs, etc.

Firefox. Recommended.  Opera - runs great.  Safari  Google Chrome  Internet Explorer (Use Internet Explorer at your own risk. You can also install Google Chrome Frame plugin for Internet Explorer that will make tons of sites (including DelugeRPG) look and work better.

It also works well on less popular browsers like Epiphany, Chromium, Arora, Midori etc.