Twisted Ecology is the second stage of R-Type Final.
Twisted Ecology, as the name suggests, is a strange Bydo ecosystem not unlike the Creature Cave in R-Type. The boss of this stage is Negus O Shim, a Bydo that can control this ecosystem's climate. This area's climate can change drastically, from a dusty, desert environment to an icy, humid one, all of which is triggered by destroying certain parts of Negus O Shim. The area itself maintains the basic shape, but the creatures and environmental hazards differ from climate to climate. Certain Bydo can only be spotted in certain climates, and visiting them is necessary to filling out the bestiary.