Zonefall Arena Battle Game App

Overview

Zonefall is a top-down arena battle built on Expo SDK 57 and React Native with the FluxNative kernel. The first screen is the game: the island from the air under the drawn ZONEFALL logotype, your record and coins, your fighter standing on the drop point you pick, and Drop in. You and seven bots drop in, loot shields, coconuts and better blasters, and fight while the ring closes in five steps with the squall outside it; the last one standing wins. A match lasts about two minutes, with cartoon knockouts and no blood.

With .env blank the game runs in sample mode: a sample save with 21 matches, 3 wins, 2,050 coins, three outfits, a mission ready to collect and day 3 of the daily ladder. Everything the player does is kept on the phone. Setting the Supabase values turns on the weekly board of every player; setting the RevenueCat keys sells Plus.

Key features

• The game: ready, playing, paused and over on one full-bleed screen; a floating stick on the left half (right half when left-handed), auto-fire at the nearest rival in reach, Dash, health and shield, players left, knockouts, a kill feed with the fighters' heads, a minimap and arrows to rivals out of view

• The end of a match on a driftwood board: your place and medal (a win with your fighter cheering under rays and confetti), stats counting up, a NEW BEST ribbon, coins flying into the coin pill, missions done, Play again

• Kit: ten outfits, each with headgear that gives it its own shape (a snorkel, a fin, ear flaps, a flame crest, headphones, a night-sky hat…), on their rarity's ground three to a row, six blasters with mods, each with a line of character; two outfits come only with Plus. The seven bots are their own cast

• Missions: three at a time from real matches (knockouts, places, survival, damage, pickups, Dashes), each round asking a little more; a 7-day daily coin ladder by the phone's date

• Leaderboard: a podium of your wins, seconds and thirds, your best ten matches with dates, and your rivals: each bot drawn in its own outfit with your record against it

• How to play drawn with the game's sprites; Settings with left-handed controls, vibration, screen shake, reduce motion, About, Terms, Privacy and Delete my data

Screens

10 screens: the game (ready, playing, paused, over), Kit, Missions, Leaderboard, Settings, How to play, Zonefall Plus, About, Terms of Use and Privacy Policy. One stack with no tab bar; every pushed screen opens on the island's sea with its own scene, on a sand page in light and the night sea in dark.

Game and backend

• One requestAnimationFrame loop while playing, a pure step(match, dt, input) with dt clamped to 0.05 s, seeded randomness, and the same fire rate at 30, 60 or 120 frames a second

• All play input on one PanResponder: the stick and Dash work together with two thumbs, the mouse on the web and the preview's taps

• A fight pacer sends one bot at a time for you, with a breather after each of your knockouts; bots hunt each other between the ring's closes

• The game folder reads the app through one hook (useGameProgress), so it lifts into another app

• Weekly board on Supabase: every table private to its player, the board read through weekly_board (island names and figures, never an id), anonymous sign-in, seeded sample rivals marked as such

• The server times every match: start_match when it begins, submit_score takes that id once and refuses a result impossible for its length; nothing else writes a score, and Delete my data clears the phone and the board

Monetisation

Zonefall Plus is one non-consumable in-app purchase sold through the App Store and Google Play with RevenueCat (react-native-purchases): every outfit and blaster, including two outfits only Plus has, and double coins from every match. Access comes from the plus entitlement only, with Restore purchase on the Plus screen. Without RevenueCat keys the Plus screen shows the intended price marked as a sample, says purchases open in the App Store version, and never grants access. No ads, no loot boxes, nothing that pays out.

Setup

It runs as it is. To go live, connect Supabase for the weekly board and RevenueCat for Plus (steps below), set your legal pages, and publish from your own developer account.