Honestly, I was disappointed that the only real thing I could do in battle was hope the right tiles appeared to match. If catapults arrived before you got sufficient ranged coverage, you couldn't protect your walls. Way too much luck for my blood.
Won on Hard with Stars, all levels. It's tough, no doubt... but totally winnable. I think I deserve a badge for that. I foresee that a version two of this game would be completely and utterly evil (rectangles reversing themselves and whatnot). Kudos to the programmer.
btw... the spot under the turret on the tank... really hard to click.
Created a functional design for Level III, but the receiving pad won't eat the molecules.
b,6,11;
c,3,8;
b,6,6;
m,4,11,0,2,rcdl2lr2wlr2ouww;
m,7,14,0,2,clolcrolcrorclor;
m,3,11,0,2,clorwwwwwwwwwwww;
m,10,11,0,2,wwwwwwwrwcllorww;
m,3,5,0,2,rwcl22owwwwwwwww;
m,10,6,0,2,rdwwwcruorrwwwww;
m,9,5,0,2,wjrrwwwwc1dr2u2orw;
m,4,2,0,2,ucddouwwwwwwwwww;