Well, that tagline now has a competitor. Borderlands 4 has 30 billion guns. Apparently. That's per an Epic Games store post that quotes art director Adam May.

We also have more passives than all the previous Borderlands combined.

In an interview shared by Epic Games the Gearbox Team boasted that Borderlands 4 will feature 30 Billion weapons.

Borderlands 4 has over 30 billion guns to choose from in the game, which is 30x the amount of different weapon combinations ...

Borderlands 4 may be leaving a classic Vault Hunter archetype behind, but that change could open the door for more creative, ...