The way the Ratchet & Clank wiki capitalizes words has changed; therefore, this article should be checked, and, if necessary, capitalization should be fixed.
Cryosleep was a gas that made most living organisms sleep, in some cases, almost immediately. A cryosleep chamber was used in Zordoom Prison for detainees. Cryosleep was also used on the Light-Eating Z'Grute on Luminopolis until it was freed by Nefarious.
Behind the scenes
The prefix 'cryo' literally relates to low temperatures, but this gas had no known connection to temperature. This may be a reference to the drop in body temperature normally occurring after sleeping was induced, so in a sense it lowers body temperature.
There is an error of the name of the cinematic which says "Hypersleep" instead of "Cryosleep." [verification needed]
- Ratchet & Clank Future: Tools of Destruction (first appearance)
- Ratchet & Clank: All 4 One
- Ratchet & Clank: Into the Nexus
- Ratchet & Clank: Into the Nexus game manual (mentioned only)