When Galaxy Miner slows down, use the production panel and Fabricator to identify the next useful decision. This checklist follows this site's mining systems; it is not a claim about player psychology or a universal speedrun route.
1. Separate current Stardust from lifetime progress
Current Stardust pays for upgrades and determines Dark Matter at reset. Lifetime Stardust records accumulated progress. A lifetime milestone does not mean you still have the spendable balance required for a reset. Check the resource balance and the actual prestige preview before buying or resetting.
2. Check whether a producer is near a unit milestone
Mining Drones start at 2 Stardust per second each. At 24 Drones, their base output is 48 per second. The 25th activates a 2x unit milestone: 25 × 2 × 2 = 100 per second. That one purchase adds 52 base output per second, rather than the usual 2. Planet and permanent multipliers apply afterward.
Before another cheap purchase, inspect each producer count. Unit multipliers double at 25, 50, 100 and 200, then receive another 4x at 500. A nearby milestone can change which purchase pays back fastest. The worked upgrade guide shows how to compare them.
3. Read the current planet
Proxima Centauri B starts at 1x production. Kepler-186f unlocks at 1 million Stardust for 10x; Trappist-1e at 1 billion for 50x; the Galactic Core at 1 trillion for 200x. These are current-run resource thresholds. Once reached, spending Stardust does not send you back to an earlier planet during that run.
If you are close to a threshold, compare the wait without spending against an upgrade's extra production. There is no fixed best choice: another producer may shorten the wait, while an expensive manual upgrade may delay it.
4. Distinguish Heat Flux from reliable unattended output
The 80%–99% Heat window provides 2x Heat Flux. At 100%, the beam overheats and normal mining is interrupted. If the visible rate falls after Heat cools, first check whether Flux ended before assuming your save lost an upgrade.
For unattended planning, compare production under the same Heat state. Do not project a temporary active bonus across an entire break. Offline credit is capped and uses saved production state; it does not simulate continuous manual mining.
5. Read the reset preview before committing
The current formula is floor(5 × sqrt(current Stardust / 1 trillion)). It first yields 1 Dark Matter at 40 billion Stardust, 5 at 1 trillion and 10 at 4 trillion. Those are calculation checkpoints, not promises about how long a run takes.
Reset clears current Stardust, ordinary upgrades and planet progress. It retains Dark Matter, purchased permanent technology and lifetime statistics. Export a backup from Telemetry & Backup before a reset if you want a recoverable copy of the run.
A short checklist before leaving
- Confirm automatic production is nonzero; manual click strength alone does not provide offline income.
- Check the next producer milestone and planet threshold.
- Export a backup if the run matters to you, especially before clearing browser data.
- On return, review the credited amount before purchasing upgrades so the change is understandable.
Play Galaxy Miner with this checklist beside the Fabricator, or open Milestones for the separate lifetime tracker.