I joined the Google + group a little bit ago and have noticed it is a very quiet place. No posts for months really. Also where the heck is the download link? I found a download link that works here: http://anddev.at.ua/load/emulators/residualvm/2-1-0-28 but am a little hesitant to install something that I don't know the source of.

There is no one currently working on the Android port. I myself haven't touched the code for nearly two years. If you know anyone interested in helping, please have them contact us.

Edit: that anddev link is to a frankenstein build of the desktop code base with a special android sdl library. Nobody from the residualvm team has anything to do with that.