I got Blockland to run on Windows 2000 with the help of Mac Workin, on a PC with an 800mhz Celeron, 128MB RAM, and a intel i752 iGPU. I used a wrapper program that added some necessary DLL files for the game to run. There were a couple white textures due to VRAM limitations and the game crashed as soon as I placed a brick, but hey, it worked.
I'm on vacation right now and away from my PC, so I can't provide more information at the moment (e.g. the program I used and some additional images). I can provide those when I get back home in a few days if there's interest.
does blockland still work on powerpc
No, Badspot patched out PowerPC support in an update.