[i]Opt-in to the beta version by right-clicking on Pandora in your Steam library, choosing Properties and selecting the beta under the Betas tab.[/i] The AI's diplomatic behaviour is now less selfish and preventing someone else from getting too strong now has a higher priority than trying to exploit someone weak. There is also more distinction in the behaviour between different factions. The AI will now use a completely new algorithm that considers the return of investment to determine whether to build units or buildings. This helps them to keep decent amounts of troops around while at the same time not falling behind with important buildings. The way how the AI handles their formers has been improved a lot. They will defend them with their military so they don't have to run away from aliens. They will also be smarter about what to build where. This allows them to be more efficient with fewer cities. The AI now takes more things into consideration when deciding what troops to build. Strategies like the tank rushes should be much harder to perform due to the AI getting missile launchers and their own tanks much earlier than before. The calculation of refit costs has been reworked to be more consistent with the actual price of the units you upgrade into. You will notice differences especially when upgrading the base unit into one from another era. Turning your white tanks into blue ones will be quite a bit more expensive. Those are just some of the highlights. Please see the [url=http://download.pandora.proxy-studios.com/.Pandora/Updater/EclipseOfNashira/Standalone/Beta/2/Windows-x86_32/Documents/English/ChangeLog.txt]change log[/url] for the full list of changes.