We know that you're often not in control of your users’ web browsers and they will either upgrade to the latest when suitable to them or be fixed on an old version by their IT team's policies.
Kahootz supports all versions of Microsoft Internet Explorer from version 7 onwards, and also Firefox, Chrome, Opera and Safari. It uses fully standards-compliant HTML so should work on other browsers too. Kahootz also works on tablets and smartphones (see Kahootz on Mobile).
Because Kahootz is accessible and exceeds WAI level AA, it will work with assistive technology ("AT") browsers and equipment for those with sight and motor problems too.