84N

UKREUROCITYPROM

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About this app

84N is a Hindi-language logic game about moving messages through a network. You are the operator of a relay grid: you connect servers, lay out safe routes for data packets, stop hostile traffic at the gateway and keep the network from overloading. Every mode is built around one idea, so the whole app reads as a single system instead of a bundle of unrelated mini games.


Four games


Relay Path. Draw routes between matching server pairs on a grid without letting any two paths cross. Thirty levels grow from a five by five grid to nine by nine. Every level is generated from a randomised Hamiltonian path that is then cut into segments, which means each puzzle is guaranteed to have a complete solution that fills the entire grid. Three stars require all pairs joined, every cell used and a move count at or below par.


Packet Net. Rotate pipe tiles until the source server feeds power to every node on the board. Levels are generated from a random spanning tree and then scrambled, so a solution always exists and the app knows the minimum number of rotations needed. Your rotation count is measured against that optimum.


Firewall Guard. An endless reaction mode. Packets descend three lanes towards the gateway. Tap the hostile ones to block them, let the encrypted ones through, and grab the rare bonus packets. A wrong tap or a leaked threat costs a life. Waves increase speed and spawn rate, and an unbroken run of correct decisions raises a combo multiplier up to five times.


Cipher Lock. A memory mode built on a nine key glyph pad. A key sequence flashes and you reproduce it. The sequence grows by one step every round, and from round six onward it must be entered in reverse order.


Knowledge section


Six illustrated articles explain the technology the games are modelled on: end to end encryption and session keys, how packets choose their route through layered protocols, how a firewall decides what to admit, what actually causes latency and jitter, what happens inside a server hall, and why a domestically hosted messaging platform matters. Each article ends with a fact panel, and reading one for the first time pays coins.


Daily activity


A seven day bonus ladder rewards returning players with a rising payout and tracks an unbroken streak. A separate daily challenge serves five questions drawn from a rotating pool, seeded by the date so every player gets the same set on the same day. Fourteen achievements track cleared levels, collected stars, arcade records, streaks, articles read and lifetime earnings, and each one pays out on unlock.


Rewards and withdrawal


The 84N in-app currency is Relay Coins, valued at one thousand coins to one dollar. Coins come from puzzle levels, arcade scores, the daily ladder, the daily challenge, articles and achievements. Withdrawal works on a thirty day cycle: collect fifty thousand coins, the equivalent of fifty dollars, inside the cycle and the payout screen unlocks with a choice of UPI or bank transfer. The wallet shows the cycle progress ring, the dollar equivalent, the days remaining and the daily rate you still need to hit the target. If a cycle expires the counter restarts while the lifetime balance is kept.


Design and structure


Eighteen screens share one visual system drawn from the palette of India's government messaging service: deep navy surfaces, cyan relay accents, signal green for safe states and saffron for warnings, on an animated circuit grid background. All artwork ships as WebP. The interface is written in Hindi with the Mukta typeface and is laid out for every screen size from small phones to tablets, with no clipped or overflowing content at any width. Progress, wallet, streaks and settings are stored on the device, and the app runs entirely offline with no account required.

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