Mine a Planet Best Upgrades — Mining Power, Cargo & Speed

The official game description names three fleet stats directly — "UPGRADE your fleet — speed, cargo & mining power to mine faster" — and a fourth lever, fleet size, is visible in every piece of gameplay footage. Those four are what you actually spend cash on. What the developer has never published is the cost curve behind them: no per-level prices, no percentage gains, no caps. That absence is the whole reason a "best upgrade order" guide is hard to write honestly. What we can do is explain what each stat controls and give you the one structural rule that holds regardless of the hidden numbers, so you can read your own fleet and decide. Fleet maths are modelled in the fleet income calculator, the ordering logic is in the walkthrough, and the multiplier systems stacked on top are pets and mutations.

Watch your drones for thirty seconds and find the one that is doing nothing. A drone in this game is always in one of three states: breaking a block, flying, or waiting to unload. Whichever state your fleet spends the most idle time in tells you which upgrade to buy, and it does so more reliably than any price comparison could — because it is measured on your save, at your depth, with your multipliers. Drones sitting still with a full hold means Cargo or Speed. Drones flying long empty stretches means Speed. Drones grinding away at a single block while the rest of the fleet waits means Mining Power. And if none of them look idle, the bottleneck is not a stat at all — it is that you do not have enough drones, which is why fleet size tends to win early. Fleet Size is also the only lever that multiplies rather than adds: every point of Mining Power you have already bought gets applied again by each new drone.

Three other systems raise your output and none of them appear on the fleet upgrade panel. Pets are the biggest: caught with Alien Balls and deployed on dock platforms, they contribute an earnings multiplier plus a global skill — the Legendary pet Skibidi Toilet was observed granting Global Mining Speed +4% stacking to a 25% cap, and a pet upgrade priced at $3.25 trillion at level 36 appears in July 2026 footage, which tells you this system scales into the very late game. Drone mutations are the second: consumable CPU chips you buy in the Gear Shop and apply to a drone, with Clean, Blizzard, Ion, Solar Flare, RadioActive, UFO and JellyFish documented on the mutations page (per-chip shelf prices carry dates there and change between versions). In footage removing a mutation did not hand the chip back, so experienced players hold their best chips for endgame drones rather than burning them on early pulls. Filling the mutation index awards cash milestones that step up to a permanent +25% at 100%. The third is planet evolution, which raises the ore band underneath everything else — covered in full on the evolution calculator page.