I'm not good at art so I can't help, although I am interested in how you're making a 3D version of it? The Falling Sand Game is the one where there are spouts for like sand and oil and things you can set on fire and make little walls to hold them right? [/quote]

Yea thats it. Basically I'm giving the player the blocks and just allowing them to place them anywhere. Then they can watch the reactions.

I have an older version right now here: Webstrand. The invite code is "bl0ck" is you want to try it.

The low resolution textures look good, you only need better antialiasing on polygon edges. [/quote]

Definetly!

Can you add variations to each tile type? Marginally different textures would be enough to destroy most unnatural periodic patterns; extra details, like pebbles and shells on some beach tiles, would be a welcome nice touch. [/quote]

Thanks for the idea man, currently I can have 256 blocks. I am no where near that, so I agree that variations would be a really nice touch.
Thanks!

Can you add variations to each tile type? Marginally different textures would be enough to destroy most unnatural periodic patterns; extra details, like pebbles and shells on some beach tiles, would be a welcome nice touch.

Thanks for the idea man, currently I can have 256 blocks. I am no where near that, so I agree that variations would be a really nice touch.
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You don't need variations of blocks, only of the texture on each face; your texture atlas is unbelievably small, 256 types* 3 views * 4 variations would be 3072 sprites, which at 16 by 16 pixels fit in 3/4 of a 1024 by 1024 texture.