REBEL 13 is the successor of REBEL 12 (2003) twelve years later and 12 yeas after the programmer of REBEL retired from the competition and commerce. ProDeo 2.0 is estimated 200-250 elo points stronger than REBEL 12 but that's not the main reason of the new REBEL release.
REBEL 13 is about offering the complete released work
All DOS editions from Mephisto Gideon Professional (1993) till Rebel 12 (2003) pre-installed with D-Fend Reloaded. Every Rebel is pre-installed and runs flawlessly with just one mouse-click ready to enjoy the 90's to the full.
Click to enlarge.
At any time screens shots can be made pressing CTRL-F5 (see the picture left).