Drill to Earth's Core Void Crystal: The Ultimate Relic Guide for Deep Divers

What Is the Void Crystal in Drill to Earth's Core?

The drill to earth's core void crystal is one of the most coveted relic items in the entire game. As a relic-tier item, it sits at the top of the loot hierarchy and represents a major milestone for any player pushing their drill machine deeper into the planet. Unlike common scrap or basic fuel items you pick up along the way, the Void Crystal is a unique reward tied to a specific boss encounter — and it carries serious value for your ongoing progression.

If you've been grinding through layers and wondering what awaits at the deeper milestones, this relic is a key checkpoint. Let's break down everything you need to know about obtaining, using, and maximizing the Void Crystal in your runs.

How to Obtain the Void Crystal

The Void Crystal isn't something you stumble upon in a random chest or buy from a shop. It has a single, specific source that tests your drilling capabilities and combat readiness.

The Glowing Core Boss Wall at 100km

According to the Drill to Earth's Core Wiki, the Void Crystal is a relic that can only be obtained after defeating the Glowing Core Boss Wall at the 100km depth mark. This makes it one of the first major relic milestones players encounter in a run.

Here's what you're up against:

The Glowing Core Boss Wall is no joke. By the time you reach 100km, you'll need a well-upgraded drill machine, solid armor, and reliable weapons capable of breaking through boss walls. Community reports suggest that players who arrive at this fight underprepared often get sent back to the surface, so stock up on fuel, healing items, and ammo before making the push.

Preparation Tips for the 100km Push

Before you attempt to reach and defeat the Glowing Core Boss Wall, make sure you have the following:

• Fuel reserves: You'll need substantial fuel to drill through the layers leading up to 100km. Coal and higher-tier fuels are essential.
• Weapon upgrades: Bring your best weapons. The Void Shotgun (320 damage) or RPG (1,000 damage) are excellent choices for breaking boss walls.
• Armor sets: Equip a full armor set to withstand heavy blows from enemies at deeper layers.
• Healing items: Stock up on Medkits and Bandages — you'll take damage from both enemies and environmental hazards.

Understanding the Relic Category

The Void Crystal belongs to the Relic item category, which is one of 12 in-game item categories. Relics are fundamentally different from other items in both how you obtain them and what they do.

How Relics Compare to Other Item Categories

Relics are unique because they're not just consumables or sellable loot. The Void Crystal can be equipped, meaning it provides an active benefit to your player rather than just sitting in your inventory. Additionally, relics can be stored at the church to accumulate coins early in a run for use in a later match — a mechanic that rewards long-term planning.

Why the Void Crystal Matters for Your Progression

The drill to earth's core void crystal isn't just a trophy. It serves multiple practical purposes that can significantly impact your gameplay.

Coin Value and Economy

At 5,000 Coins, the Void Crystal has one of the highest sell values of any item obtainable at the 100km mark. For context, here's how it stacks up against other high-value items:

While refined gems can eventually outvalue the Void Crystal, those require access to a Gem Refinery and the raw materials to process. The Void Crystal, by contrast, is a guaranteed reward for clearing a specific boss — making it a reliable early-to-mid-game economic boost.

Equip Benefits

The Void Crystal can be equipped, which sets it apart from most high-value items that are typically sold or consumed. While the exact equip bonus isn't fully detailed in available sources, relic items generally provide passive benefits that enhance your drilling efficiency, combat effectiveness, or survivability. Community speculation suggests that equipped relics may contribute to coin generation or provide defensive bonuses during deep-layer exploration.

Boss Wall Mechanics and Strategy

The Glowing Core Boss Wall is part of a broader boss wall system in Drill to Earth's Core. Boss walls are barriers that block your progress at certain depth milestones, and you must defeat the associated boss to break through.

Recommended Loadout for Boss Wall Fights

The RPG is particularly noteworthy because its description explicitly states it can be used to "break Boss Wall." If you can find one in a chest above the Golden tier, it's your best tool for these encounters.

Item Tiers and Rarity Context

As of the September 2026 update, items in Drill to Earth's Core now have tier-based rarity indicators. Understanding where the Void Crystal fits in this system helps you gauge its relative power.

Rarity Tier System

While the Void Crystal's exact tier color isn't specified in available sources, its status as a Relic — a category that only drops from boss defeats — places it at minimum in the Epic-to-Legendary range. The fact that it's tied to a 100km boss encounter and carries a 5,000 Coin value reinforces its high rarity.

For comparison, the Bounty Hunter's Duck is noted as the rarest item in the game with a 0.1% appearance rate in structures and 1% in chests. The Void Crystal, while not relying on random chance, requires significant effort and progression to obtain — making it similarly exclusive in practice.

Tips for Efficient Void Crystal Farming

If you're looking to consistently obtain the drill to earth's core void crystal across multiple runs, here are some strategies to streamline the process:

1. Optimize your drill upgrades: Prioritize drill speed and fuel efficiency upgrades to reach 100km faster. The quicker you get there, the more attempts you can make.

2. Use the Princess class for gem runs: If you're farming gems along the way to fund your push, the Princess class offers a 50% price boost on gem sales. This can bankroll your weapon and armor purchases before the boss fight.

3. Store relics at the church: If you've already obtained the Void Crystal in a previous run, store it at the church to accumulate coins. This gives you a financial head start for subsequent attempts.

4. Watch for Money Fogs: All items can double in price when Money Fogs are active. If you encounter one near the 100km mark, consider selling your loot immediately to maximize returns.

5. Coordinate with your class choice: Certain classes like the Reaper (Soul Lantern) or Swordman (melee damage boost) can make the 100km push easier. Choose a class that complements your preferred combat style.

The Beeper: What Comes After the Void Crystal

The Void Crystal is just the beginning of the relic system. As you push beyond 100km, additional boss walls await — each potentially dropping new relics with even greater power. The Void Crystal serves as a gateway item, proving you have the skills and equipment to tackle deeper challenges.

Players who consistently clear boss walls and collect relics will find themselves with a significant advantage in later runs, both from the passive benefits of equipped relics and from the coin economy that relics help build through church storage.

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Frequently Asked Questions

How do you get the Void Crystal in Drill to Earth's Core?

The Void Crystal is obtained exclusively by defeating the Glowing Core Boss Wall at the 100km depth mark. It cannot be found in chests, purchased from shops, or obtained through any other method. You need to drill to 100km, engage the boss wall, and win the fight to claim this relic.

What is the Void Crystal worth?

The drill to earth's core void crystal has a sell value of 5,000 Coins, making it one of the most valuable items available at the 100km milestone. However, since it can also be equipped for passive benefits and stored at the church for coin accumulation, many players choose to keep it rather than sell it.

Can you equip the Void Crystal?

Yes, unlike most high-value items that are purely for selling, the Void Crystal can be equipped. This means it provides an active passive benefit to your player character. The exact nature of the equip bonus isn't fully documented, but relics generally enhance drilling efficiency, combat stats, or survivability.

Is the Void Crystal the rarest item in the game?

While the Void Crystal is extremely exclusive — tied to a specific boss defeat at 100km — the Bounty Hunter's Duck is technically the rarest item with a 0.1% appearance rate in structures. However, the Void Crystal's requirement of clearing a major boss wall makes it one of the most difficult items to obtain consistently, placing it in the upper echelon of item rarity alongside Mythic-tier finds.

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For more information about Drill to Earth's Core items, boss strategies, and deep-dive guides, check out the Drill to Earth's Core Wiki on Fandom for community-maintained data and updates.

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