The lighter and the notepad can be used to make the objectives notepad visible in dark areas and is also used to light the fuse of grenades. The lighter uses an unknown fuel source and, in turn, never seems to run out of fuel. It may also be used to illuminate small areas (however, it is visible to enemies); because the lighter illuminates Artyom it is not a good choice of equipment to pull out for stealth situations.
Artyom obtains the lighter and the notepad in the first chapter in both games. Along with the lighter, the clipboard is an invaluable tool that will help guide Artyom all the way to the end of both games - as the compass on the clip board will constantly point to the next location that the player has to go to.
In Metro: Last Light, the lighter has a greater number of uses, and can be utilized to the advantage of players much more often. For one, it is the primary tool to burn through the cobwebs that otherwise slow Artyom down. It can obviously be used to light areas if torches are nearby, which is especially useful in areas of the darkness that render Flashlight and Nightvision goggles useless. In addition to the use of compass of Artyom's clipboard, the smoke of the lighter will also always drift in the direction of the nearest objective - giving more immersive, yet less concrete directions to proceed next to. Although the Lighter itself is not enough to scare the spiderbugs off, the player can use it to light up the flammable objects to create a safezone quickly.
In Metro: Last Light, Artyom can equip a weapon and the lighter at the same time, but at the cost of accuracy; this can be remedied by attaching a Laser sight on a weapon. This can be useful for burning cobwebs while defending himself, as in the case of when fighting Spiderbugs, though Artyom will un-equip the lighter if he aims down the sights, begins to run or reloads.
- The lighter may have been made by Alex or even Hunter as a gift to Artyom, and may be quite common in the Metro as many friendly NPC's have a similar notepad, including Miller who is looking at his at the start of D6 in the train ride.
- In Last Light and Redux, all playable characters have a lighter of the same model.
- The bullet design of the lighter might have been inspired by the bullet capsule containing the message to Miller given to Artyom by Hunter in the novel. Artyom wore the capsule around his neck, like a talisman, for most of his journey to Polis.
- Its design is similar to trench lighters from World War I and II, as well as novelty bullet lighters that can be found in souvenir shops in Eastern Europe.
- Despite apparently running on lighter fuel, it never seems to run out.