The Space Empires 4X gaming system has proven popular enough for three reprintings and two expansions. Close Encounters is a reprint of the first expansion - identical in every way except replacement counters for the basic game are no longer included.

Features: 
- Requires Space Empires 4X basic game to play. 
- Introduces strengths and weaknesses for several alien races 
- New Titan Class super ships 
- Fleet groups can become stronger over time with accumulated battle experience