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An artificial life model and simulator of controlled complexity, using endogenous fitness. Software and documentation available for Unix and Macintosh.

By Filippo Menczer and Rik Belew


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Simulation software

You can download LEE from the following sites. But be warned that they may not all be up-to-date with the latest release...

Update (2005): you can now run LEE with the original Mac GUI using Paul Pratt's Mini vMac emulator on recent Macs, Windows, and Linux boxes
Download Version 2.1 (final release) from Indiana University (LEE's current home)
Download Version 2.1 (final release) via FTP from U. Iowa (LEE's prior home)
U.C. San Diego (LEE's original home)
ENCORE (from Purdue: many other ENCORE mirrors exist)
Europe mirror at GRAL ALife Games & Demos
CMU ALife systems repository
Also available on CD-ROM from PTF: Prime Time Freeware for AI, Issue 1-1
SAL (Scientific Applications on Linux)

For more info:

Some papers on LEE can be found here
Howard Gutowitz wrote a review of LEE and other ALife simulators, which is now lost in cyberspace (SFI Tech Report, 1994).