Always optional
All essential gameplay remains available without invitations. Share only with people who welcome your invitation. No contact uploads, automatic messages, paid referral tiers or cash prizes.
Meaningful friendship
One invitation per account, no self-invitations or invitation loops. An existing invitation cannot be replaced. A Starchain star lights after your friend clears verified wave 5; branches recognise friends of friends, but do not pay extra rewards. Three stars unlock the Aurora sky; ten unlock the Solar Flare and Star Weaver title. Cosmetics do not improve combat.
Emissaries & couriers
Lend a goddess after she fights in a verified wave, before your recruit accepts the invitation. That recruit keeps the same guest even if you later change your selection. Guests use a fixed level 5, without the lender's upgrades, during recruits' first ten waves. Each newly verified wave within waves 1–10 earns both accounts 100 Mana and 2 Celestial Dust, once per wave. Existing progress before an invitation earns no retrospective couriers. Replays do not earn more. These are digital game rewards, not transferable money.
Divine Beacons
One beacon per account per weekly worldwide monster, only while the living monster has 20% HP or less. The beacon expires after one hour and cannot be renewed. Each other account can receive one extra worldwide strike for that week, usable only before expiry. A valid reinforcement activates a non-stacking 10% worldwide damage bonus for the beacon's owner until expiry. Guild damage and normal combat are unchanged.
Oracle cards & Seed Duels
Downloaded cards contain your chosen goddess, achievement, and invitation link. Public challenge pages show your display name, goddess, wave and selected challenge mode—not email or your saved base. Mode is a challenge setting, not a certified mode record. Duels use the same seeded encounter, four fixed towers and 900 Mana. They earn no account rewards. Public Oracle links expire after 90 days.
Privacy & measurement
Invitation relationships and reward receipts are saved to your account. Your own Starchain is private; other keepers cannot browse it. Shared links are public, so share them intentionally. Link copies and share-menu openings are not proof of a social post. The owner sees aggregate game-record counts, not visitor tracking. No optional campaign tracking is enabled.
If rewards influenced a public recommendation, disclose that clearly. Do not create fake accounts, spam communities or promise guaranteed results. Suspicious activity may be reviewed before eligibility is accepted.