There are 243 guns, and you see a sliver per run
The full roster is 243 guns: 191 from the base game, 15 added in the Supply Drop update, 15 in Advanced Gungeons & Draguns, and 22 in A Farewell to Arms. You will never hold more than a handful in one run, so “getting good guns” is really about raising the odds and recognizing fit — not farming a single secret weapon.
The five quality tiers
Every gun belongs to one of five qualities: D, C, B, A, S. Quality is the ceiling on how strong a roll can be, and the floor you are on decides how often each tier appears (see the chests guide for the exact per-floor percentages). S is rare everywhere and essentially only appears from floor 2 onward.
Where guns actually come from
- Shops — spend shells on a gun you will use, not the shiniest tier. A shop gun is a known purchase, so it is the safest way to fill a gap in your loadout.
- Chests — dodge-roll them open; the chest color sets the quality ceiling, and deeper floors roll better. Rainbow chests give the best top-tier odds.
- Shrines and altars — gamble mechanics that can upgrade, swap, or reroll your loadout (covered in the shrines and altars guide).
- Drops — bosses and enemies occasionally drop what they were holding; this is the least controllable source.
Magnificence quietly caps your best loot
The game tracks a hidden magnificence value so you cannot stack A and S gear in a single run. Two things feed it:
- Item magnificence — picking up any A or S gun or item adds 1. It persists across floors and cannot be reduced by dropping or selling.
- Generated magnificence — set to the number of red and black chests when a floor is generated; opening or destroying one subtracts 1.
When the game is about to give you an A or S reward, those combine into a logarithmic downgrade chance. Practical upshot: opening every red and black chest early quietly raises the odds your later rewards get downgraded, so sometimes leaving a chest is the better play.
Raising your odds without wasting a run
Loot every room before moving on, and check a gun’s real profile in the gun types guide before committing a slot. Spend shells on fit over tier, and only take a shrine gamble when your current gun is actively holding you back.