Tower Incremental crystal mining is the mid-game resource mechanic in Lucky CStudios' Roblox title Tower Incremental. Unlike early floor mining that focuses on chipping away stone walls for silver and iron ores, crystal mining requires players to break regenerating crystal clusters inside a dedicated Crystal Mine room to fund critical upgrade trees, high-tier permanent perks, and late-game machinery.
How Crystal Mining Works
As you purchase stairs and ascend past the initial rebirth thresholds and metal smelting floors, you will unlock the Crystal Mine room.
In this room, crystal clusters sprout across the floor area:
- Harvesting: Players interact with individual crystal nodes to break them and collect crystals.
- Node Regeneration: Broken crystals take time to regrow before they can be harvested again.
- Player Density: Other players in the server can occupy the same room without stealing your personal nodes, but you must wait for the crystals in your area to fully regrow between swings.
- Range & Automation: By default, automated mining tools do not pathfind between nodes on their own. However, purchasing harvest range upgrades allows your pickaxe to reach crystals across the room without forcing you to run back and forth.
Crystal Mine In-Room Upgrades
Inside the Crystal Mine, a dedicated upgrade terminal allows players to spend their gathered crystals to boost mining efficiency and secondary stats.
| Upgrade Name | Resource Used | Primary Effect |
|---|---|---|
| Harvest Yield | Crystals | Increases the base quantity of crystals awarded per broken node |
| Regrowth Speed | Crystals | Reduces the cooldown time required for crystal clusters to respawn |
| Mining Range | Crystals | Expands the distance from which your character can target and break crystals |
| Crystal Power | Crystals | Converts crystal progression into a permanent multiplier for overall gold income |
Early on, harvesting yields small amounts such as a few hundred crystals per click. Increasing yield and regrowth speed provides a steady baseline, while pushing the range upgrade (which costs 100,000 crystals at higher tiers) allows players to farm the entire room while standing still.
Scaling Crystal Yield with Glyphs and Upgrade Trees
Relying solely on the in-room upgrade board results in slow progression. Experienced players scale crystal income through external multipliers found in the Upgrade Trees and higher-floor Glyph rooms.
Upgrade Tree Multipliers
The primary bottleneck in crystal farming is broken by prioritizing Upgrade Tree nodes:
- 2x Crystal Multipliers: The Upgrade Tree includes multiple stacking "2x Crystals" nodes. Purchasing two of these quadruples your intake (4x), and higher tiers push this multiplier to 8x and 10x.
- Investment Strategy: Upgrading room stats directly yields diminishing returns at higher tiers (often requiring tens of thousands of crystals for minor incremental gains). Saving early crystal reserves to purchase flat 2x multipliers on the Upgrade Tree multiplies your harvesting rate far faster.
Crystal Glyphs
Climbing higher into upper biomes unlocks Glyph stations that boost crystal output:
- Electric Glyphs: Unlocked above the early iron floors, this station rolls multipliers specifically targeted at crystal gains alongside luck and silver.
- Radiant and Frost Glyphs: High-floor stations roll substantial crystal multipliers (such as 4.8x to 8.4x and beyond) that stack multiplicatively with tree perks.
- Luck Scaling: Rolling rare glyph lines requires building luck multipliers from earlier glyph stations (such as Poison and Wind glyphs) or high-tier trails.
What Crystals Are Used For
Crystals serve as a progression bridge between the early metal-smelting stage and late-game mechanics like woodcutting and star metal forging.
- Upgrade Tree Expansion: Upgrade Tree 2 requires 200,000 crystals for early tier purchases and continues to demand crystals to unlock bulk smelting and mining enhancements.
- Permanent Upgrades: Rebirths reset temporary currency balances. Spending crystals at the Permanent Upgrade terminals locks in crucial boards, upgrade tree sections, and specific glyph rooms so they persist across future rebirths. Later tiers require millions of crystals to purchase.
- The Prize Wheel: Spinning the prize wheel located in mid-tower floors costs 100,000 crystals per spin, awarding temporary boosts like 2x gold buffs or rare cosmetic items.
- Crystal Trail Merchants: Specialized trail vendors sell movement trails (such as the Celestial Trail and Mythic Storm Trail) for crystal sums ranging from 15,000 to over 200,000 crystals.
- The Prism Refractor: Later in progression (around floor 90+), crystals are deposited into the Prism Refractor machine, which converts them over several-second cycles into Prisms needed for high-tier rebirth requirements.
Frequently Asked Questions
Can you auto mine crystals while AFK?
Yes, but effective AFK farming depends on mining range. Because the standard auto-mine tool swings at nearby nodes without walking around the chamber, players must purchase enough Mining Range upgrades on the Crystal Mine board to reach distant clusters from a single central standing position.
Do crystals reset when you rebirth?
Yes. Unspent crystals reset upon performing a rebirth. Players should invest their available crystals into permanent upgrades, tree nodes, or trails before triggering the next rebirth.
Should I spend crystals on the Prize Wheel early on?
No. The Prize Wheel costs 100,000 crystals per spin and offers chance-based rewards such as timed gold multipliers. In early progression, 100,000 crystals are far better spent on the Mining Range upgrade or the 200,000 crystal milestone for Upgrade Tree 2.
