Linear progression

Season 0 progression is measured in Productive Farm Time — not ordinary browser-open time.

Stages

Stage	Requirement	Approximate productive time
Repair the well	Starting resources	15 minutes
Open Alpaca Pasture	Feed stock + repaired gate	1 hour
Open Timber Grove	Pen level 2 + wool	3 hours
Open Stone Yard	Sawmill + planks	7 hours
Open Craft Road	Workshop materials	15 hours
Complete Heritage Farm	Cart + Grand Barn	30 hours

Productive Farm Time

Simply counting how long a tab is open would be trivially automated. Instead, a minute counts as Productive Farm Time only when:

• The game is connected to the Rust backend.
• The player has interacted during the preceding few minutes.
• The session is not paused or hidden for an extended period.
• The actions follow valid production and collection timings.
• The account has not reached its daily credited-time limit.

Limits

Maximum credited time:       4 hours per rolling 24 hours
Inactivity timeout:          5 minutes
Offline production storage:  maximum 4 hours

Building and production timers continue while the player is offline, but offline time does not count toward NFT eligibility. Casual players can return to stored resources without letting anyone farm eligibility by leaving a tab open for days.

The daily cap means the rarest 30-hour reward cannot be reached before roughly eight days. That gives the system time to detect obvious automation and prevents the entire collection disappearing during the first night.

Anti-abuse

No system can perfectly guarantee "one human equals one wallet". For the rarest tier the backend combines:

• Wallet limits (one NFT per tier per wallet).
• CAPTCHA at account creation and claim.
• Device / IP risk signals.
• Manual review of highly suspicious accounts.

A custom on-chain program would not solve multi-wallet abuse by itself, so none is used for progression.