Most, if not all, of the updates do indeed only add new scenes/animations.
The only part whe could consider as a game (the side-scroller and the RPG battle) are pretty limited and haven't been updated in a while.
Let us be honest, it is more a gallery than a game. But I doubt his supporters are supporting the "game", right ? I mean, there are almost no game to speak of. I doubt anyone would play the side-scroller and say "Looks like a great game, I'm in !". I believe they mostly support the animations. So why would it be surprising for the developper to release what his supporters want ?