Experiment: Earth

The Earth Experiment

The Earth experiment is one of 12 experiments in the laboratory, available at laboratory tier 3.

The goal of the Earth Experiment is to get a certain amount of density.

Mechanic

Drills dig up earth, higher tier drills collect more earth per tick. Drills can be upgraded and new ones can be purchased using laboratory resources. Cost of buying upgrades and drills increases exponentially with each purchase. Drills will increase volume based on the added mass (keeping density constant), so make sure to turn them off before you start compressing!

Compression reduces volume/diameter and raises density. Compression speed decreases at lower volume (stopping completely at the minimum amount), so gathering more mass will result in faster compression. Certain compression modes will affect the stability of your dirt pile; if stability reaches 0% you will lose all previously collected mass and will have to reset the experiment, so be ready to switch it off once the stability gets low.

The density will eventually reach a maximum amount, at 80 * (4/3)^3*log₃mass, which is approx. 80 * mass^{0.78557852143}. This means to get all the modules, you must have a mass of at least 2.7e7 (2.7M) kg, and to complete all goals, you must have at least 8.92e12 (892B) kg mass.

Compression modes

• Slow & Safe: Drills get slower the higher compression rate gets (stopped at maximum rate), slow compression but won't reduce stability.
• Quick & Dangerous: Drills can continue normally regardless of compression rate, very fast compression but drains stability
• Stabilize: Increases stability and slows down the drills.

Prestige

Prestige resets all your drill tiers and collected earth (purchased drills will remain) and requires you to have a certain amount of mass drilled. Every prestige multiplies the prestige goal by exactly 1.33, so the current goal mass is 1.33prestige-1 * 100kg.

You can choose between 2 bonuses:

• -20% Stability loss & +10% stability gain: Reduces the stability loss when using Quick & Dangerous compression mode and increases stability restoration rate while in Stabilize mode.
• +30% Compressor React & +10% Drillpower: Increases the reaction speed of the compression bar (the bar will adjust faster) and increases the amount of mass drilled.

All increases are multiplicative.

Rewards

Density	Reward
1,750kg/m3	Earth Taste
6,000kg/m3	Steel Foundation
30,000kg/m3	Gravel
125,000kg/m3	Titanium Hull
2.5Mkg/m3	Avalanche
55Mkg/m3	Earthquake
1,000*1.5lvl kg/m3	+(lvl+1)% Earth damage
1,500*1.6lvl kg/m3	+(lvl+1)% Earth resistance