Those special stages introduce the third form of Cats in a Box - Heavy Assault C.A.T.
List of Levels
- April 18th and 19th, 2015.
- November 15th, 2016
- The 15th day in any month, from 07;00 to 14:00
- The 16th day in any month, from 17:00 to 00:00
- February 15th, 2015: 17:00 to 00:00
- February 14th, 2015: 7:00 to 14:00 (first time)