We have just officially released the 6th update for OOTP 15, version number 15.6.31. It is a maintenance release which fixes reported problems, including 3D issues on some graphic chipsets and issues with Mac OSX 10.9.6 and Yosemite.

Here are the improvements / fixes compared to version 15.5:
- Fixed issues with some graphic chipsets displaying 3D mode
- Fixed problems with licensing on MacOSX 10.9.6 and OSX 10.10 (Yosemite)
- Improved in-game AI
- Improved play-by-play commentary
- Fixed several user reported bugs and glitches

This is likely the last update for OOTP 15 as development on OOTP 16 has already begun. Thanks everyone for the support, this has been the most successful version ever for us!