Vadis System Open Space is the 3rd Stage the Player will play in Darius Gaiden, which is either the three levels. It contains Zones D, E and F.
- Zone D is a Small Planets Level, and the Boss is Folding Fan.
- Zone E is a Colony Level, taking place in a Centrifugal Space Station. The Boss is Electric Fan.
- Zone F is a Satellite Level, taking place in Red and Orange Nebulae, and a Moon, where the Ship travels inverted. The Boss here is Folding Fan, which is stronger and harder than the Fan Fish in D.