I’m not sure what caused it, but the plugin I use to show Flash content stopped working properly. I’m not even sure how long it was broken. Hopefully I broke it today while I was migrating some things, or maybe an update caused a conflict somewhere. Whatever the cause, I’m fixing it by abandoning the plugin. It’s just too unreliable to depend on a plugin, which can break or stop being updated, for a major part of the site.
I’ve fixed A Koopa’s Revenge 2 and will be fixing the other games shortly. Sorry for the inconvenience.