The drill is the tool that mines down into the earth. For each kilometer it drills, it will add a mineshaft, which will give you minerals and isotopes. On some levels you'll unlock certain milestones.

The drill contains four parts. Three of them to dig (the engine, the fan/cooling and the drill-bit), and one (the cargo), which increases your capacity. These can be upgraded by crafting blueprints, which in turn can be purchased or discovered.

## Drill Power / Wattage / Time to next level[]

Every depth has a set difficulty. This is set up in the game code, and it's fixed. It increases as you go deeper, but has no fixed generation formula. Your time to drill down is this difficulty divided by your drill power. So any increase in drill power (in Watts) will translate directly to an increase in speed.

There is an online calculator for how much time it will take to drill from a certain level to another one, given a certain equipment.

However, if you want to do it by hand (it's easier than it looks), see the next section. In the end, all of this can be summarized into "buy the highest % increase first", if you're buying the next level of upgrades, but if you're planning on skipping a level of upgrades, this becomes quite important.

### Technical section[]

- Calculation

- Your Fans and Drill-bit have a
**base**amount of Watts. Those base watts are added. So. e.g. at lv4. you take Platinum Drill (base 300) and Quad Fan (base 250) for a base of 550. - Your Engine has a Watts
**multiplier**. At lv. 4, 4 Cylinder Engine has base 10, multiplier 4. - Calculate Base x Multiplier. In this example, 550 x 4 = 2200.
- Your Engine also has a Base, but it grows so slowly that it can safely be ignored after lv. 3. In this example, it only adds 40 total Watts from its Base (10 x 4) (1.8% of total power), and it only goes lower as a percentage after this.

- For higher numbers, remember your exponentials.

- Million (M) is 1e6 (1 x 10^6, a one followed by 6 zeroes). Billion (B) is 1e9, Trillion (T) is 1e12, Quadrillion (q) is 1e15, Quintillion (Q) is 1e18, Sextillion (s) is 1e21, Septillion (S) is 1e24, and so on.
- When adding, bases add, if exponents are the same they keep the same.
- When multiplying, bases multiply, exponents add.

So for e.g. lv. 17. Rocket Engine is base 5000, multiplier 3.25million (3.25e6). Temperature Hardened Drill is base 2.75e6 and Vacuum Chilled Coolant System is base 2.25e6. So base watts are 5e6. Total watts are 5e6 x 3.25e6 = 16,25e12. So, 16 Trillion Watts. As you can see, if we add the Engine contribution, it's 5e3 x 3.25e6, which are 16.25e9, that is, 16 Billion, or 0.1% of the total. That is negligible.

- Double-check

You can also use this to check your current Blueprints levels, if for some reasons you can't find their images on the blueprints page. Say you have. e.g. 140.8 Quintillion Watts, and you suspect you're still on lv. 23 blueprints. For lv. 23 the bases are 15B+24B * 1.22B, total 47.58e18 (Q). As this doesn't add up, you increase your Conductive Heat Disperser T1 (base 100B), and try again. 15B+100B * 1.22B = 140.3Q (plus the 5k from the engine, that adds up to 140.8Q). This adds up. So, we have verified we have lv. 23 engine and drill, and lv.24 fan.

- Growth rate

Engines can be compared directly, value for value, while Drill Bits and Fans are a little more complicated. Because the Engine has the multiplier, an upgrade in Engine will always give the same % increase in speed regardless of Drill and Fan, while an improvement on Drill or Fan will depend on the level of the other.

Drill Bits and Fans comprise approx. 50% of the Base each one, so any upgrade to them will be lower impact than an upgrade to the Engine, which multiplies by their combined Base. However, the developers took pains to make the growth of each component roughly the same, so this is less important in practice.

E.g. lv.23 to 24. Drill grows from 15B to 70B (~4.6x), and Fan from 24B to 100B (~4.1x). However, the *total* increase is from 39B to 94B/115B, that is, x2.41/x2.95. You will see this is slightly higher than half of the improvement, because this only increases part of the Base. Which is translated to +141%/+195% speed by the game (this is the "Drill Speed + X%" you see in-game). But the Engine goes from 1.22B to 3.675B multiplier. This translates **directly** into a x3 multiplier (+200% speed).

## Some drills[]

- Note
- Some of these images may be out of date / be from the legacy version.