Wow... What an ending.
Animation was good, art/visuals were great, voice acting was impressive for a flash game, music was emotional and gripping, and the story kept me hooked. This is one of my top favorite point-and-click games.
(The reason I took off half a star was due to that annoying remote-control car mini-game.)
Edit: I didn't mind at all the religious influences in the game (I'm LDS myself but I'm also a realist).
In fact, I liked how the game portrayed the different reactions by various characters of a world ending scenario with subliminal religious themes; from disbelief and ignorance (Rick), to fear and uncertainty (Ira, Johnathan), to full-on religious fanaticism (Seth).