I've downloaded the Jett Rocket demo, but I haven't played it yet.

I also going to download the Hydroventure demo soon

Um, even if you go off topic, try to at least have part of the OP be on topic.

I'll just focus on the thread title. I've downloaded all of them.  Jett Rocket convinced me to buy the full version. Still trying to beat the demo on Cave Story. One area seems more puzzle oriented than an old school game should be, but whatever. I do like the demo for Frobot, but I need to look up how to beat the boss.

And Yet It Moves actually disturbed me, for reasons I can't quite completely explain. It wasn't the gameplay, but the music and graphics. That was one game where being a cute mascot platformer would have been a lot better for me personally (like the bonus stages in the first Sonic). On that note, the similar Fuidity was fine, although I have to master it.

I've tried them all except for the latest one. I haven't bought any yet, I did get Jett Rocket from my secret Santa. I do like the Bit.Trip.Fate demo, I might get that one later.

Tried them all. They convinced me to buy Max & the Magic Mark and Art of Balance.

tried them all - the ones released in America that is - no art of balance or DIVE demos for us yet :(

finished all but the ones for cave story and robox , bought fluidity after playing the demo and would consider a few others if I had the money (frobot, max and the magic marker, robox, thruspace - if it wasn't so damn fast!!).

all in all I'm impressed with the high quality and diversity of releases, I hope the demos help with sales.

Save Story and bit Trip Fate