I loved Dr. Robotnik's Mean Bean Machine.  This is nice.

Spiffy how they look at each other; shocked at that. One minor thing is that the highlight on the background critters seems a tad too bright, luring your eye away from the puzzle frame itself.

Nice. Really reminds me of Doctor Robotnik's Mean Bean Machine on Genesis.

Well, personally I would also change the ng's color, but it's just me :D

I'm just not feeling this dark teal at all

Reminds me of a game called Skittles, same thing except the little guys were round..

Crap. >_< Don't know how I missed that.  Anyway, in addition to changing the background, I also got rid of the black cloud outline, and made the green block a little darker.

Background is much improved now :)

Though I can still see a little of the black outlining in the bottom left corner.

The black outlines around the clouds bother me.  Personally I just use black outlines on solid objects and not gas, smoke, clouds etc.  The rest ain't bad.

Reminds me a lot of 'Dr. Robotik's Mean Bean Machine', with the whole merging thing. Nice and clean and cheerful colour choices too.

Maybe the background could do with being a little more 'faded'/toned down a little, so it doesn't detract from the game in the centre?

Overall, very nice though.

Yea that BG is weak. May just be the color choices.

The "merging" thing is nice, I like it.
I like the embossed bg.

I'm not feeling the BG, the rest is pretty cool :)