(This is a guest post by Antoni Sawicki aka Tenox)

Previously I managed to crack and unlock the demo version of DUX SimCity for UNIX. It worked just fine on the original pre-built platforms, DEC Unix, HPUX, SunOS and IRIX. Unfortunately the IRIX binary is for 5.3 in COFF format and doesn’t work on more modern ELF based IRIX like 6.2 and above. More importantly however, there never has been a release for IBM AIX! Inability to play SimCity on RS/6000 is excruciating. Not to mention several other Unix systems of that time.

A few days ago I ran a VCF West 2024 exhibit showcasing this important piece of software history. I got to chat with many people about these shortcomings and decided to see if something can be done about it.

On the right of the picture above, you can see a OLPC XO. This laptop plays an important role of SimCity history. During conception of OLPC, the game has been open sourced under a new name “Micropolis”. This was insanely fantastic endeavor, kudos for everyone involved. Unfortunately the software has been “enhanced” to run on XO Sugar GUI thing, ported to C++ Python and otherwise defaced in several different ways.

Fortunately there survives a very early source code of Micropolis, aka old gen. While GPL and under a new name, has only minor, cosmetic changes compared to the original source code. With some minor tweaking and working around funnies with xlC and MIPSpro compilers, I was able to build old-gen Micropolis for AIX 4.3, 5.1, IRIX 6.5 and HP-UX 11.31 on IA64.

Most importantly however, in the process, I discovered that the original DUX SimCity assets, including TCL/TK GUI cruft was directly usable with just a few small changes in sim.c. Effectively undoing all the changes mentioned in DONE and making it almost the original, except for name. A hybrid GPL Micropolis – DUX SimCity Demo Asset build has been born!

You can download it from here: https://github.com/tenox7/micropolis