Uranium sits in the late-game tier of The Forge’s mining and forging loop. It’s a Legendary ore with a low drop rate and a strong combat trait, so getting even a few pieces reliably matters once you move into Forgotten Kingdom and Volcanic Depths.
Where Uranium drops in The Forge
Uranium’s location is very specific:
- Region: Forgotten Kingdom
- Rock type: Basalt Vein only
- Rarity: Legendary
- Drop chance: 1 in 777 per successful Basalt Vein mine
- Sell price: 66$ gold
- Multiplier: 3x (forge power scaling)
Within Forgotten Kingdom, Basalt Veins appear from Ashen Passage onward, with the highest concentration in the Volcanic Depths. Other rock types in the area—Basalt Rock, Basalt Core, and Volcanic Rock—cannot drop Uranium.
How to reach Basalt Veins in Forgotten Kingdom
Step 1: Progress to Forgotten Kingdom. You need to reach roughly level 10 and complete Sensei Moro’s prologue quests in Stonewake’s Cross to unlock the region, then enter the main cave there to transition into Forgotten Kingdom.
Step 2: Push down through Descent’s Beginning and the mid-level zones. Early sections (Descent’s Beginning, Crumbling Halls, The Sunken Cells) focus on Basalt Rock and Basalt Core, which are good for money and pickaxe progression but cannot drop Uranium.
Step 3: Move into Ashen Passage and then Volcanic Depths. Ashen Passage is the first area where Basalt Veins show up, often mixed with Basalt Cores. Continue deeper to Volcanic Depths; this is where Basalt Veins cluster densely around the volcanic area and become easy to chain-farm.
How to farm Uranium efficiently
Because Uranium has a 1/777 drop rate, success comes from how many Basalt Veins you can break per minute rather than any single vein. The core loop is simple: find veins, mine them, repeat.
Step 1: Upgrade your pickaxe until you can mine Basalt Veins.
Baseline progression in Forgotten Kingdom usually goes:
- Cobalt pickaxe → early-world upgrade
- Titanium pickaxe → recommended early target
- Uranium pickaxe → next-tier upgrade you’ll craft later using Uranium, used for long-term farming
You only need enough mining power to hit Basalt Veins consistently; once you reach that threshold, focus on speed and luck, not raw power.
Step 2: Set up in Volcanic Depths.
Head to the Volcanic Depths section of Forgotten Kingdom and find the volcanic area where Basalt Veins and Volcanic Rock cluster together. Two patterns are especially efficient:
- Lines or arcs of Basalt Veins along walls.
- Pockets where veins and cores sit very close together.
Pick a small loop where at least several Basalt Veins respawn within a short walk. You want to continuously move between them so there’s always a rock ready to hit.
Step 3: Mine multiple rocks at once whenever possible.
If two or three rocks stand close together, position your character so your pickaxe swing overlaps all their hitboxes. You can damage all of them simultaneously, effectively increasing your veins-per-minute if one or more of those rocks is a Basalt Vein.
Step 4: Use Luck and mining-speed potions.
Luck potions increase your chance to roll higher-rarity ores from each mine, making the Uranium grind much shorter over time. Mining-speed potions reduce rock clear time, which indirectly increases the number of rolls you get per session. Both kinds of potions can be bought from potion NPCs near the main hubs in each world and last a few minutes per use.
Step 5: Commit to longer sessions, not short bursts.
A 1/777 chance means long dry streaks are normal. Treat Uranium as a background farm while you also:
- Fill your stash with other Forgotten Kingdom ores for forging and money.
- Complete kill or mining quests that send you into the same cave network.
- Collect Volcanic Rock and other high-tier ores for future weapons and armor.
What makes Uranium worth farming
Uranium isn’t only rare; it has a unique trait that changes how your build performs in combat.
- Trait name: Radioactivity
- Effect: periodic area-of-effect damage equal to 5% of your armor’s total HP per tick to nearby enemies whenever you’re in combat.
- Applies to: armor only (not weapons).
Because the damage scales off your armor’s total HP rather than flat numbers, Uranium becomes more valuable the tankier your build is. High-HP armor sets forged with Uranium pieces can turn your character into a walking damage aura that constantly chips away at mobs around you.
Uranium also carries a 3x forge multiplier, which means items using it land higher base stats than ones made with lower-tier ores. Combined with the trait, this makes Uranium armor a strong endgame option even if you already have decent Legendary pieces from other ores.
Using Uranium in the forge
Once you finally secure Uranium, you have to decide how to spend it. Because the ore is rare, it’s usually better to commit it to one or two long-term pieces rather than spreading it thinly across multiple low-impact crafts.
Step 1: Decide whether you want offense or survivability from your armor slot.
Uranium’s Radioactivity trait adds scalable AoE damage; it does not provide defense like Obsidian or Mythril, and it doesn’t add on-hit effects like Fireite or Magmaite. If you want your armor to be a damage engine while other ores handle defense, Uranium is an excellent pick.
Step 2: Forge heavy, high-value armor pieces.
For pure money and power, heavy armor tiers (such as heavy chestplates) are the best place to invest rare ores. They:
- Gain more raw stats from the 3x multiplier.
- Sell for dramatically more gold when you choose to offload them.
- Benefit the most from HP-scaling traits like Radioactivity.
Step 3: Mix Uranium with other high-tier ores.
Many late-game ores carry their own traits—extra defense (Obsidian, Mythril), crit chance (Rivalite), dodge chance (Darkryte), and so on. You can combine several different ores in a single armor piece to stack multiple traits:
- Use enough Uranium to secure the Radioactivity trait.
- Add defensive ores if you want your AoE aura to be hard to kill.
- Blend in offensive ores if you prefer crit or burn on your weapons and keep Uranium’s trait mainly for AoE chip damage.
How long Uranium farming really takes
Because of the 1/777 rate, Uranium is not something you get on demand for a single quest or one quick session. Roughly speaking:
- If you can break 40–60 Basalt Veins per hour with a good pickaxe, potions, and smart routing, you’re looking at several hours on average per ore.
- Higher mining power and speed shorten each rock’s time-to-break, pushing that vein count per hour up, which has a much bigger impact than minor luck gains.
- Luck boosts and efficient multi-rock mining can swing you significantly below or above the statistical average on any given day.
The key is to integrate Uranium farming into activities you would be doing anyway at that stage of the game: clearing quests in Forgotten Kingdom, chasing Mythic ores in Volcanic Rock, and stockpiling materials for late-game forging and upgrades.
Once you understand that Uranium only drops from Basalt Veins in Forgotten Kingdom—and that Volcanic Depths is the most vein-dense zone—the process becomes a matter of repetition and efficiency. Build up a pickaxe that can handle Veins quickly, stack Luck and mining-speed potions, mine clustered rocks whenever possible, and treat each farming run as progress toward a few high-impact Uranium armor pieces rather than a one-and-done drop. Over time, the radioactive aura they unlock can reshape how you approach combat in The Forge.
