Perimeter games in order

All 3 games of the Perimeter series in the order they came out, from Perimeter (2004) to Perimeter 2: New Earth (2009).

1. 
   PerimeterPC · K-D Lab
   21 May
2. 
   Perimeter: Emperor's TestamentPC · K-D Lab
   3 Nov
3. 
   Perimeter 2: New EarthPC · K-D Lab
   2 Jan