Big Light is a gadget.
When used, Big Light fires a laser which temporarily increases the mass and space occupied by the target to a certain extent for an unspecified amount of time.
- The Devil Card
- A Visitor from the Country of the Future/U.S. English dub
- Gian is a Genius
- Nobita and the Wind Wizard
- The Rumored Nobita
- The Nobi Family's Giant Tunafish
- Giant Suneo Appears!
- Shizuka-chan in My Pocket
- Nobita's Secret Gadget Museum ~museum Adventure~
- Nobita's Great Adventure into the Underworld
- In the early manga, it has the same design as the Small Light.
- The original height the user returns to appear to exclude the alteration made by the original gadget, as Nobita was able to return to his original height prior to the use of Devil Card.