Build a Base RNG Wiki

Build a Base RNG Item Database

Roll odds, health, damage and per-level growth for every object we have been able to verify. The game prints its own odds during a roll and its own stats in the index, so these are read values rather than estimates — and where we have not seen a number, the cell stays empty instead of being filled in.

Updated

The index total moved from 53 to 56 objects between the July and late-July builds, so treat any count here as a snapshot rather than a fixed number.

Showing 98 of 98 items

ItemRarityOddsHealthDPS
Wood BlockBasic1 in 3500
Wooden Spear BarrelBasic1 in 415013/s
Basic CannonRare1 in 30275100/s
Cross BowRare1 in 15
Stone Spear BarrelRare1 in 43
Wooden MortarRare1 in 23
CatapultRefined1 in 100
Rusty BlockRefined1 in 150
Axe SpinnerEpic1 in 300
Rusty Spear BarrelEpic1 in 30075054/s
Stone MortarEpic
Galaxy Wood BlockLegendary5.3K
Rusty SpikesLegendary8.3K350/s
Wooden TeslaLegendary400100/s
Metal BlockadeMythic1 in 42,80025K
Spike ShooterMythic815124/s
TurretMythic800480/s
Witch BrewGlorious4K5.4K/s
Space BlockPrimordial559.9K
Hyper TurretAtomic22K21.2K/s
Galaxy Golden MortarDivine60.5K48K/s
Galaxy MortarDivine73.6K49.9K/s
Galaxy Space BlockDivine12.1M
Shiny Hyper TurretDivine152.8K141.3K/s
Shiny Space MortarDivine45.8K16.7K/s
Galaxy MinigunLunatic237.1K259.1K/s
Punk Ice CannonLunatic40K59.1K/s
Admin BlockUnknown
Armor TurretUnknown
Arrow TurretUnknown
Deep fryerUnknown
Deep TrapUnknown
Devil CrossbowUnknown
Double Laser CannonUnknown
FlamethrowerUnknown1 in 15,000
Frying PanUnknown
Galaxy Arrow TurretUnknown
Galaxy Deep fryerUnknown
Galaxy Gold BlockUnknown
Galaxy Golden TrapUnknown
Galaxy Heavy HarpoonUnknown
Galaxy MegaphoneUnknown
Galaxy Metal BlockadeUnknown
Galaxy Reinforced CannonUnknown
Galaxy Robust TeslaUnknown
Galaxy Space Spear BarrelUnknown
Galaxy Space TrapUnknown
Galaxy Spike ShooterUnknown
Galaxy Wizard TowerUnknown
Gold BlockUnknown
Gold Spear BarrelUnknown
Golden MortarUnknown
Golden TrapUnknown
Heavy FlamethrowerUnknown
Heavy HarpoonUnknown
Ice CannonUnknown
Laser CannonUnknown
MegaphoneUnknown
Metal BlockUnknown1 in 15,000
Metal MortarUnknown
Metal Spear BarrelUnknown
Metal TrapUnknown
MinigunUnknown
MortarUnknown
Neon SpikesUnknown
Reinforced CannonUnknown
Robust TeslaUnknown
Rocket TurretUnknown
Rusty MortarUnknown1 in 3,000
Rusty TrapUnknown
Shiny Arrow TurretUnknown
Shiny Basic CannonUnknown
Shiny FlamethrowerUnknown
Shiny Gold Spear BarrelUnknown
Shiny Golden MortarUnknown
Shiny Heavy FlamethrowerUnknown
Shiny Heavy HarpoonUnknown
Shiny Ice CannonUnknown
Shiny Metal TrapUnknown
Shiny MinigunUnknown
Shiny MortarUnknown
Shiny Reinforced CannonUnknown
Shiny Robust TeslaUnknown
Shiny Rocket TurretUnknown
Shiny Space BlockUnknown
Shiny Space Spear BarrelUnknown
Shiny Space TrapUnknown
Shiny Stone TrapUnknown
Shiny Wizard TowerUnknown
Slime CannonUnknown
Space MortarUnknown
Space Spear BarrelUnknown
Space TrapUnknown
Stone BlockUnknown1 in 60
Stone TrapUnknown1 in 75
Wizard TowerUnknown
Wooden SpikesUnknown1 in 60
Wooden TrapUnknown1 in 8

Where these numbers come from

Game totals and update dates come from Roblox's own API. Everything else was read frame by frame from public gameplay recordings — the roll banner prints the exact odds, the index panel prints health, damage and per-level growth, and placed objects carry a floating odds label. Each value records the clip it came from.

What we deliberately leave blank

One of the twelve rarity tiers has a confirmed colour but no confirmed name, and most objects still have no stat card. Those stay empty. An empty cell here means nobody has seen the number yet, not that it is zero or small.

Stats curve, they do not climb in a straight line

Space Block was read at levels 35, 48 and 56 in one recording, and the per-level gain rises by a constant 579.4 each level rather than staying flat. A curve fitted to those three points reproduces them to within 0.12%; a straight line understates the level 56 reading by 10.9%. Objects measured only once are still projected linearly and their calculator says so.

Why mutated objects are listed separately

A mutation changes more than the numbers — the plain Wood Block reads as Basic with 500 health while the Galaxy version reads as Legendary with 5,250. Because of that we never copy a mutated reading onto the base object, and objects only ever seen mutated are left without a base rarity.

FAQ

Build a Base RNG Item Database FAQ

Where do the roll odds come from?

The game prints them itself. Every roll shows a '1 in N' banner above the result, and objects already placed on a base carry the same label overhead, so a single endgame screenshot confirms a dozen at once.

Why do some objects have no rarity?

Because we have only ever seen them with a mutation applied. Mutations raise the displayed tier, so reading 'Divine' off a Galaxy version tells you nothing reliable about the plain one.

Do stats keep growing forever?

No. Objects stop at level 64, which is where the index shows '[MAX]'. The level calculator on each object page caps there.

Do stats climb evenly with level?

No. On the one object we could read at three different levels, the amount gained per level itself rises by a fixed 579.4 each time, so the total follows a curve. Objects with only one reading are projected in a straight line, which undershoots near the level cap.

Is this every object in the game?

Not yet. The in-game index counts 56 slots and we have 98 entries here, several of which are name-only. The gaps are marked rather than filled with guesses.