As of today, a free demo is readily available for the indie hit Botanicula. It features the first ten minutes of the game, and pretty much gives you the general gist of the story. You can also buy the game for $10 directly off the website.
Before today, I didn't have the time to play Botanicula (even though I already own it from a former Humble Bundle, funnily enough!), but after trying the demo out, it's safe to say that I'm going to carve out some time in the near future for it.
Browser Demo [Botanicula]