Comment by DonHopkins

Good point! To respect EA's trademark and the terms of their modifications to the GPL-3 license regarding the use of their SimCity trademark, I renamed the open source version of SimCity to Micropolis, which was its original working title. It would be safe to call this project "PGMicropolis" as long as it wasn't for profit.

At the time, there was a disk drive manufacturer by that name, so Will Wright renamed it SimCity.

Fortunately the guy who now owns the rights to the Micropolis trademark (and is an old school hacker who really gets it) was kind enough to allow us to use the name for non commercial purposes, under the Micropolis Public Name License.

https://github.com/SimHacker/MicropolisCore/blob/main/Microp...

Here's the explanation from the MicropolisCore repo's LICENSE file:

https://github.com/SimHacker/MicropolisCore/blob/main/LICENS...

>MICROPOLIS LICENSING

>The Micropolis project operates under two important licenses:

>1. The Micropolis GPL License Notice - This is the GNU General Public License with additional terms added by Electronic Arts to protect the SimCity trademark while allowing the code to be freely used and modified.

>2. The Micropolis Public Name License - This license governs the use of the "Micropolis" name itself, which is a registered trademark of Micropolis Corporation.

>We extend our sincere gratitude to Electronic Arts <https://www.ea.com> for their generosity in releasing the SimCity source code under an open-source license, and to Micropolis Corporation <https://www.micropolis.com> for allowing the community to use the Micropolis name for this open-source city simulation project. Please respect both Electronic Arts' SimCity trademark and Micropolis Corporation's Micropolis trademark by adhering to the terms of these licenses. Additionally, we ask all users to please honor the terms of the <https://www.gnu.org/licenses/gpl-3.0.html> GNU General Public License v3, which protects the freedoms that allow this project to exist and thrive as open-source software.

More details, and another cautionary tale about accidentally getting sued for trademark infringement:

>Sam Earle's fractal neural network approach (https://github.com/smearle/gym-city

>[...] Here's more about my plans for making a multi player version of Micropolis with time travel, branching, and merging, by using github as a social network and MMPORG platform (when it's not down ;):

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