In Tower Incremental by Lucky CStudios on Roblox, iron ingots serve as a core progression currency unlocked on Floor 10. Players convert mined iron ore into ingots at the Smeltery to buy essential Upgrade Tree nodes, unlock stat-boosting trails, secure permanent upgrades before rebirths, and feed the Star Forge for late-game Star Metal.
Primary Iron Ingot Uses in Tower Incremental
Once you begin smelting iron ore, ingots are required across several distinct systems throughout the tower.
| Category | Specific Use / Item | Known Cost (Iron Ingots) | Benefit / Effect |
|---|---|---|---|
| Upgrade Tree | Bulk Smelt & Ingot Yield | Varies (e.g., 500 to 20,000+) | Multiplies ingot production and processing speed |
| Upgrade Tree | Stat Multipliers | Scaling ingot costs | Boosts gold gain, luck multipliers, and movement speed |
| Trail Shop | Gilded Trail | 75 Iron Ingots | 1.75x Gold multiplier |
| Trail Shop | Unnamed Luck Trail | 300 Iron Ingots | Increases luck stats |
| Trail Shop | Aurora Trail | 500 Iron Ingots | Multiplies coin and progression yields |
| Trail Shop | Crown Trail | 5,000 Iron Ingots | Top-tier trail needed to unlock the Collect Trail |
| Permanent Upgrades | Tree Section 1 Retention | 75,000 Iron (+ 110B Gold) | Prevents Upgrade Tree Section 1 from resetting on Rebirth |
| Permanent Upgrades | Tree Section 2 Retention | 500,000 Iron (+ 13T Gold) | Prevents Upgrade Tree Section 2 from resetting on Rebirth |
| Permanent Upgrades | Upgrade Board 3 Retention | 2,500,000 Iron Ingots | Retains Upgrade Board 3 upgrades through Rebirths |
| Star Forge | Star Metal Conversion | Direct Ingot Deposit | Consumes iron ingots over time to generate Star Metal |
Upgrade Tree Advancements
The Upgrade Tree (first accessible via Floor 5 and expanded on subsequent floors) transitions from silver to iron ingots around Floor 10 to Floor 15. Key nodes purchased with ingots include:
- Bulk Smelt: Multiplies how many ingots are generated per smelting cycle.
- More Ingots: Increases the raw yield gained each time ore passes through the press.
- Luck & Gold Multipliers: Provides multiplicative stacking buffs required to climb higher floors and unlock rare glyph rolls.
Trail Shop Purchases
Cosmetic trails in Tower Incremental grant passive multipliers to your stats. Several early-to-mid-game trails require iron ingots instead of gold or silver:
- Gilded Trail: Costs 75 iron ingots and provides a 1.75x gold boost.
- Aurora Trail: Costs 500 iron ingots.
- Crown Trail: Costs 5,000 iron ingots. Purchasing every standard trail in the shop unlocks the Collect Trail, which grants 3x gold, 3x silver, 2x luck, and 2x iron yield.
Permanent Upgrades (Rebirth Prep)
Rebirthing resets basic tower stairs and non-permanent rooms in exchange for base multipliers. To prevent losing valuable nodes, players spend iron ingots in the Permanent Upgrade rooms:
- Section 1 Protection: Costs 75,000 iron ingots (alongside 110 billion gold) to preserve Floor 1–20 tree purchases.
- Section 2 Protection: Costs 500,000 iron ingots (alongside 13 trillion gold).
- Upgrade Board Protections: Up to 2,500,000 iron ingots for higher-tier board preservation.
The Star Forge (Late-Game Conversion)
On higher tower floors, players unlock the Star Forge. Similar to how raw iron ore is fed into the Floor 10 Smeltery, processed iron ingots are deposited directly into the Star Forge to forge Star Metal, a mandatory currency for later rebirth tiers and high-level upgrade trees.
How to Get and Smelt Iron Ingots
Iron ingots cannot be mined directly; they must be refined through a two-step extraction and smelting process.
- Unlock the Smeltery (Floor 10): Reach Floor 10 by purchasing stairs with gold. Unlocking the room reveals the conveyor furnace and drop container.
- Mine Iron Ore in the Mines: Head down to the Floor 3 Mine. Once Floor 10 is reached, gray iron veins begin spawning alongside silver blocks. Upgrades to pickaxe speed, ore density, and the "Lucky Strike" node (bought with gold) dramatically raise ore collection rates.
- Smelt at the Conveyor Belt: Deposit raw iron ore into the Smeltery bin. By default, 10 raw iron ores process into 1 iron ingot.
- Upgrade Smeltery Throughput: Spend currency on the Smeltery console to speed up the conveyor belt (reducing cycle times down to 2–3 seconds), expand bin capacity, and unlock remote ore auto-depositing so you do not have to walk back and forth.
Recommended Spending Priority for Iron Ingots
Because high-tier upgrades require millions of ingots, spending them inefficiently can stall your climbing speed:
- Prioritize Bulk Smelt and Ingot Yield First: Always purchase the initial Upgrade Tree ingot nodes. Doubling your ingot output early cuts hours off subsequent grinds.
- Buy Shop Trails for Passive Multipliers: Secure the 75-ingot Gilded Trail and 500-ingot Aurora Trail. If you have enough production, save 5,000 for the Crown Trail to finish the shop collection.
- Bank Ingots for Permanent Rebirth Upgrades: Before triggering Rebirth 2 or Rebirth 3, ensure you have farmed the 75,000 to 500,000 ingots needed to lock in your Upgrade Tree sections.
- Feed the Star Forge: Once you reach the Star Forge floors, shift surplus ingot production entirely into Star Metal generation to meet upcoming rebirth quotas.
Frequently Asked Questions
How many iron ores make one iron ingot in Tower Incremental?
By default, the Smeltery converts 10 raw iron ores into 1 iron ingot. Upgrading Bulk Smelt nodes in the Upgrade Tree increases the number of ingots produced per batch.
Do iron ingots reset when you rebirth?
Yes. Standard iron ingots and raw iron ore reset upon rebirthing unless you have purchased specific permanent retention upgrades or achieved rebirth tiers that retain those specific floor inventories.
Where is the Smeltery located?
The Smeltery is located on Floor 10 of the tower. Players can purchase stairs with gold to reach it and use the in-game teleport menu to jump back to it once unlocked.
