The games themselves aren’t removed, the Flash plugin on most people’s browsers are, which is why we’ve been digging things up ways to resume playing them, through alternative plugins, or downloadable programs.
But are the Deviantart games still playable?
For most people? No. I haven’t been able to play Flash games on dA since Nov-Dec or so, for example.
Anyone running the new plugin betas can play about half of the Flash content on there, and anyone using the portable copy of Flash can run all of them, but you have to download the games to your PC and run them there, instead of being all convenient and just playing them on the site.
I mean, you can download a pack of flash games together with the portable copy and hope that the game you wanted it’s on there.