Use Stella Sora’s material trials for the upgrade you are making: Basic Trials for experience resources, Tier-up Trials for tier materials, Skill Trials for skill materials and Emblem Trials for Emblem development. If you need Disc experience, inspect the Basic Trial reward-type selector instead of repeatedly collecting Trekker experience. Temporary Urgent Bounty bonuses apply only to the trial types and dates named in that notice.
Material categories from supplied written guides, the original Disc-farming observation and dated official notices. No current drop-rate, best-stage or Vigor-efficiency ranking is claimed.
Sources checked:
On this page
Start with the material shown by the upgrade screen
Covered upgrade materials and farming destinations
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| What you need | Where to look | Before spending Vigor |
|---|---|---|
| Trekker experience | Basic Trials | Select the correct reward type and compare the materials with the intended upgrade. |
| Disc experience | Basic Trials reward-type selector | The original player report specifically describes changing away from Trekker experience rewards. |
| Tier-up materials | Tier-up Trials | Check which tier and material your Trekker or Disc currently requires. |
| Skill materials | Skill Trials | Upgrade the skill the build uses rather than assuming every action has the same priority. |
| Emblem materials | Emblem Trials | A useful affix is not guaranteed by one run or by another player’s lucky roll. |
The July 2026 official update added Difficulty 7 Basic Trials and Difficulty 9 Tier-up Trials. Those are dated difficulty additions, not evidence that every account can enter them or that they are always the best use of Vigor. Follow the difficulty and unlock conditions displayed for your account.
Change the Basic Trial reward type for Disc experience
Mobile_Adeptness_577’s original farming post describes finding Disc level-up materials by changing the Basic Trial reward type. The replies confirm that players had overlooked the selector while collecting the wrong experience resource. Before repeating a stage, inspect the displayed rewards and make sure the selected material is the one your Disc needs.
That post does not establish a current universal exchange rate or optimal farming priority. Its commenters disagree about Vigor value, and their numerical rewards are historical. Use the selector discovery, rather than treating one old reward total as a present-day rate table.
Check which trials receive the temporary bonus
Urgent Bounty does not always name the same trial types. The July version 1.13 notice names Skill and Emblem Trials for its August bonus period; the version 1.14 notice names Basic and Emblem Trials for its later period. Read the current notice instead of assuming every material farm receives extra drops.
Announced anniversary Urgent Bounty window
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| Condition | Officially announced value |
|---|---|
| Period | November 2, 2026 13:00 – November 9, 2026 12:59 (UTC-7) |
| Covered trial types | Basic Trials and Emblem Trials |
| Extra reward drops | A total of 8 each day during that period |
The eight-drop statement is a total daily bonus allowance, not eight extra drops for every trial type or an unlimited multiplier. The notice also lists missions tied to spending Vigor. Claim conditions and ordinary stage rewards remain separate from that temporary allowance.
Farm the shortfall, then reassess
Calculate the next intended upgrade before committing a large Vigor reserve. The official Progression Planner can calculate Trekker and Disc upgrade materials. Compare that requirement with what you own, then choose a trial or available event exchange that supplies the missing resource. An event shop can provide useful materials without proving that every item has a better conversion rate than every trial.
Use the Trekker progression guide to identify which upgrade is actually blocked.
Plan recurring claims around the Global daily and weekly reset; an event deadline can differ from the ordinary reset.
Sources & scope
These notes organize the sources below. Creator observations belong to their authors; this site has not performed the gameplay tests. A source check is separate from a game update or publication date.
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