Drill to Earth's Core upgrades are cards you buy with coins during a run to make the drill and the team stronger. Fandom's Drill Upgrades page says you always see four cards: three cost coins and one costs Robux. There are 21 upgrades across five rarities, from 7 Common cards to a single Mythic one.
Each card you buy raises the next price, and a rolled card can come up a higher rarity that adds several levels at once. The Driller class halves the price of Drill Power, Mega Drill and Power Slam, and Sportskeeda says Executioner's Level 4 perk gives a free upgrade, picked from three, each time you beat a boss.
Every Drill to Earth's Core Upgrade
| Upgrade | Rarity | What it does | Per level |
|---|---|---|---|
| Drill Power | Common | More wall damage per drill hit | +4 damage |
| Fuel Storage | Common | A bigger fuel tank | +25 fuel |
| Drive Speed | Common | A higher top speed | +5 max speed |
| Drill Defense | Common | The drill hurts enemies that touch it (Deadly Drill was merged into it) | +20 damage (the 22 August notes say +25) |
| Team Health | Common | More max health for the whole team | +10% max HP |
| Sack Storage | Common | More room in every player's sack | +2 sack space |
| Power Drive | Common | Faster acceleration | +1 speed per second |
| Power Slam | Rare | Every 10th hit deals bonus wall damage | +50 bonus damage |
| Engine Overdrive | Rare | A burst of speed after each wall | +0.5 s of burst |
| Mega Drill | Rare | Drill hits can crit for extra wall damage | +20% crit damage |
| Firepower | Rare | More gun damage for the team | +20% gun damage |
| Sharpness | Rare | More melee damage for the team | +20% melee damage |
| Blast Power | Rare | More explosive damage for the team | +20% explosive damage |
| Power Burst | Epic | The driver can trigger a 5-second burst of drill power and speed | +1 level (+0.5x damage) |
| Mounted Gunner | Epic | More damage from the drill's mounted gunner | +20 damage |
| RPM Overclock | Epic | More drill hits per second | +0.05 hits/s |
| Life Steal | Epic | Melee hits heal the attacker | +1 HP per hit |
| Money Drill | Legendary | Coins for every wall the drill breaks | +10 coins per wall |
| Ultra Drill | Legendary | Stacking damage while the drill keeps hitting | +1 stacking damage per hit |
| Health Regen | Legendary | The team regenerates health over time | +5 HP every 12 s |
| Cart Extension | Mythic | An extra cart on the drill | +1 cart |
Deadly Drill was merged into Drill Defense, and Power Burst's icon file is still named Overdrive Chamber. Fandom lists +20 damage a level for Drill Defense, while the 22 August patch notes say +25.
What Drill to Earth's Core Upgrades Cost
| Rarity | First buy | Price rise per buy | Levels per card |
|---|---|---|---|
| Common | 100 coins | +20 coins | 1 |
| Rare | 250 coins | +50 coins | 2 (when a card rolls up to Rare) |
| Epic | 500 coins | +100 coins | 3 (when a card rolls up to Epic) |
| Legendary | 1,000 coins | +200 coins | 4 (when a card rolls up to Legendary) |
| Mythic | 10,000 coins | +1,000 coins | 10 (when a card rolls up to Mythic) |
Fandom's wording on how the price climbs is loose. Reading it as each buy of a rarity adding its step to that rarity's next price, n buys cost n × first price + step × n × (n − 1) ÷ 2 in total. For Common cards that is 700 coins for five (5 × 100 + 20 × 10) and 1,900 for ten. The calculator below uses the same reading.
Upgrade Cost Calculator
Upgrade cost calculator
5 Common cards cost 700 coins. The next one after them costs 200 coins.
Prices from Fandom's Drill Upgrades page, assuming each buy of a rarity raises that rarity's next price by its step. Class discounts such as Driller's are not included.
Best Drill to Earth's Core Upgrades
Fandom's Drill Upgrades page names RPM Overclock, Ultra Drill and Power Burst as the best set for boss walls: RPM Overclock adds hits per second, Ultra Drill stacks damage on every hit while the drill keeps going, and Power Burst multiplies that stacked damage for its 5 seconds.
allthings.how's 100 km guide (7 August) ranks RPM Overclock, Drill Power and Power Burst as the top buys, rates Deadly Drill II, Drill Power II, Health Regen, Team Health and Engine Overdrive as strong, and says to skip Power Drive. Deadly Drill has since been merged into Drill Defense. For gun, melee and explosive builds, Firepower, Sharpness and Blast Power add 20% a level for the whole team.
Walls get much tougher with depth: the boss wall goes from 100 HP in the Grass Layer to 500,000 HP at 100 km. The layers page lists every one.
Upgrades by Rarity
- Common (100 coins, +20 a buy): Drill Power, Fuel Storage, Drive Speed, Drill Defense, Team Health, Sack Storage and Power Drive.
- Rare (250 coins, +50 a buy): Power Slam, Engine Overdrive, Mega Drill, Firepower, Sharpness and Blast Power.
- Epic (500 coins, +100 a buy): Power Burst, Mounted Gunner, RPM Overclock and Life Steal.
- Legendary (1,000 coins, +200 a buy): Money Drill, Ultra Drill and Health Regen.
- Mythic (10,000 coins, +1,000 a buy): Cart Extension.
Upgrades last for the run. How to reach the core plans which ones to stack before the 100 km wall, and the Infinite Mode guide covers the walls past it.
Drill to Earth's Core Upgrades FAQ
What are the best Drill to Earth's Core upgrades?
RPM Overclock, Ultra Drill and Power Burst for boss walls (Fandom); allthings.how puts RPM Overclock, Drill Power and Power Burst first.
How much do upgrades cost?
The first buy costs 100 for Common, 250 for Rare, 500 for Epic, 1,000 for Legendary and 10,000 for Mythic coins, and each buy raises the next price.
What does the Robux card do?
One of the four cards on offer costs Robux instead of coins. Fandom does not say whether it is better than the coin cards.
Which class makes upgrades cheaper?
Driller: Drill Power, Mega Drill and Power Slam cost 50% less at Level 2. The tier list shows where it ranks.