It's unfortunate that Flash is still a proprietary domain, given that it's become both increasingly prevalent and useful. I've put a substantial amount of work into developing a Flash game and have discovered, as I follow the market, that a lot of games are incompatible across different versions of the plugin. Fonts go missing, graphics features behave with different levels of performance, and worst of all, on some versions of the plugin, errors that elsewhere went ignored cause exceptions and terminate execution, resulting in the game becoming wholly unplayable.

I've also discovered a way to consistently crash the Linux plugin.

I'm hoping for either a suitable, market-accepted replacement to come along, or for an emulation like Gnash to get up to speed with the newest versions of SWF.