The reliable Project P.I.T.T. route is to stabilize basic duck production first, add the cash register and automatic crafting next, prepare stronger transport before Phase 3, and treat Phase 4, Anomaly production, and the ending routes as separate late-game goals. The accepted sources agree on that broad order, but they do not provide one official step-by-step script or universal unlock thresholds. Use this page as a progression map, then open the focused puzzle and tool pages when a specific system blocks you.
Phase 1: prove the basic production loop
Start by learning the complete loop with the simplest product: create rubber ducks, move them through the room, and feed them to the Maw. The first goal is not maximum speed; it is a route you can observe from start to finish without losing products behind furniture or under loose panels. Once that loop is stable, the later tools make sense because each upgrade solves a visible transport, timing, or throughput problem rather than replacing the core loop.
Phase 2: add cash and repeatable handling
The next verified stage introduces the cash register and the move toward automatic crafting. Build short paths, keep the collection area reachable, and change only one part of the line at a time so that jams have an obvious cause. Panels, fans, magnets, and other tools can support a repeatable route, but the sources consistently show that physics layouts still need observation and clearing rather than becoming permanently hands-off.
Phase 3: upgrade transport and check your version
Tier 2 fans and the Phase 3 transition belong to the later middle of the run. Older videos show a scripted falling-object event breaking production lines, but the developer announced that this event was removed on August 20, 2026, so current behavior must not be described from old footage alone. If an older save still contains debris, stop the line, clear the route, rebuild the shortest working path, and verify the current game version before assuming the event will repeat.
Phase 4: Anomaly work and hidden progression
Accepted gameplay footage places Anomaly work in Phase 4 and shows a combination involving a duck, cash register, and piñata. Treat the displayed crate, unlock prompt, and WEIRD! connection as verified observations, while leaving the precise threshold and payout unclaimed. This is also the point where the fuse chain, 200 kg platform, hidden areas, and later ending work become easier to understand as linked progression rather than unrelated secrets.
Choose the ending route deliberately
The evidence distinguishes an earlier END? point from a later END! or secret-route result, so do not collapse them into one ending. The hidden path is tied to upper-area exploration and the 200 kg chain, while the complete normal-ending trigger is less fully documented in the accepted sources. Before following a spoiler-heavy route, finish any factory experiments you care about, note your current phase, and use the endings page for the confirmed differences and remaining evidence gaps.
Sources used for this answer
These links are the accepted evidence set for this page. Player methods are kept separate from official or developer statements, and unsupported details stay marked 待确认.