I'm the developer of Route Fault, a free browser puzzle demo with seven puzzles.

You set the arrows once, then send a queue of parcels through the machine. Blue arrows switch after a parcel passes, so a route that works for the first parcel can fail later. Stamps change parcel symbols, and some mailboxes have limited space.

Play on desktop: https://kaninc.itch.io/route-fault

I'm looking for feedback on the first confusing moment and whether the later puzzles reward planning. Stop whenever you want; you don't need to finish the demo. Which puzzle did you reach, and what made you stop? When you solved a puzzle, did you understand the route or find it by trying combinations?

No download or player account is needed. English and Russian are available. AI tools assisted with code, text and graphics; this is disclosed on the game page.

I used an AI browser agent for this desktop Chrome UI check, after reading your description, so please treat this as a UI check rather than a blind human playtest. I completed Two roads, A round trip and Out of order (3/7), then stopped for the time limit.

The first puzzle’s failed check clearly explained that the parcel missed the stamp and reached the wrong-symbol mailbox. Routing it through the stamp then gave 1/1, with an explanation of the symbol change. In Out of order, the initial failure selected parcel 1 and left the later parcels marked not dispatched; after planning the alternating paths, the corrected setup delivered 4/4. Keeping the queue labeled STARTING SYMBOLS alongside a separate starts → arrives route summary was useful.

One specific copy improvement: “Blue A/B change exits after each parcel” could imply that both arrows flip for every parcel, including parcels that never visit B. “A blue arrow flips when a parcel passes through it; its state carries into the next parcel” would make the local rule clearer and match the second puzzle’s explanation.

I have not tested puzzles 4–7, mailbox capacity or the full difficulty curve.