About this game:
Do you have to have one of those same computers that the guy in the demo uses or can you use a mouse to draw what you need?

No worries, that's just a fancy optional the guy has put in. You can use the mouse for all your drawing pleasures - though a DS version would be cool knowing the capabilities of the game.

I bought it, and i love it. I've even started making my own levels.
My only complaint is that some of petri's levels are quite simple, you've really got to set a challenge for yourself to get the most out of it.
Some of the fan made levels, however, will blow your mind.

I think that the concept and visuals of this game are amazing
but I've played flash games just like it, online, for free
I'd spend hours playing this though so I think I'm going to buy it

thats one of the games i got for christmas, and when i put in the touch screen in my eee pc, it will be awesome

I hope it will come to Steam.

I have to admit I was disappointed with this game. I think good puzzle design should pretty much force you to be clever, it shouldn't give you the option to use the same simple solution in 75 of the 80 levels in the game.
It's true that the player CAN make more elaborate and more interesting solutions, but the game never really encourages proper experimentation with this, and the player is never needed to learn advanced and more interesting techniques.
See Armadillo Run as a similar game that solves most of Crayon Physic's problems simply due to very good puzzle design. And it may be old enough to warrant a GoG-release too (considering we have fairly recent stuff like Darkstar One here...).

Hell, if we're talking about Get-something-from-A-to-B puzzle games, look at Lemmings. That's excellent level design.

Wishbone: Yeah, definitely. The original Lemmings is one of the pinnacles of great level design. Still almost unmatched, after what... 17 years?

Something like that. I'd like to see a faithful remake of the original Lemmings.
[EDIT] Nearly 18 years actually. Wikipedia sets its release date at February 14, 1991.

Well, at least Crayon Pshysics Deluxe has that World of Goo reference which made me install World of Goo again.
That's a plus.

Actually, the Team17 remake is quite good and for the most part stays true to the orignal level design idea. The levels are different, but they kinda feel right... at least the harder ones do.

Downloading the demo now.
I enjoyed the original... though I was hoping for some kind of big leap forward in the deluxe version.
World of Goo was awesome... well worth the money.
If people like A->B Physics puzzle games then can I recommend Blast Miner.
It has 2 modes, arcade (like tetris. sucks). and puzzle (move a block to an exit using timed explosions. awesome).
I think there is a free demo... though i played the whole thing free on GameTap.
http://www.blastminer.com/
http://www.gametap.com/play/gameDetails/000499950
The later levels are evilly hard... but very addictive.