Incredible game!Extremely addictive!In the central page of the game you place the code of each level in order to avoid playing again from the scratch.It has a space where it says "typehere".You place the code there and choose "go".

1: no code

2: sidewalk
3: lamppost
4: statepen
5: parklane
6: msoffice
7: dwelling
8: glassbox
9: raadmaan
10: toyblocs
11: bladerun
12: pavement
13: sealevel
14: autoshop
15: highrise
16: omnicorp
17: surfshaq
18: seashell
19: fishtank
20: deadends

Oops, I was capitalizing the words.  Has to be all lower case to work.  Here's the level codes so far if you just want to see the pixel buildings.

sidewalk, lamppost, statepen, parklane, msoffice, dwelling, glassbox, raadmaan, toyblocs, bladerun

Can't seem to figure out how to use the Level Codes. It always starts with the first level. Here are the codes I've been trying...

sidewalk, lamppost, statepen

If anyone can figure out how to use the codes post it here.