Mudline Off-Road Driving Game App

Overview

Mudline is an arcade driving game in the mud: a small truck over endless hills with a gas and a brake pedal. Balance it in the air, land on its wheels, splash through puddles, grab fuel cans and coins, and go a little further each run. The game is the first screen, ready to play in a second; the garage, missions, leaderboard and settings push over it as pages of the same land.

Everything works with no backend in sample mode, from a lived-in sample save. Connect Supabase for a weekly board of every player and RevenueCat to sell Mudline Plus.

Key features

• Driving: gas and brake pedals at the bottom of the screen, nose up or down in the air, flips and big air paid in coins, fuel cans to find, a crash past 75°

• One seeded course that grows steeper in 500 m stretches, coin rows over its crests, posts, checkpoint flags and the player's best on the road

• Garage: eight bodies of their own shapes, from a buggy to a tractor (six for coins, two only in Plus), and Grunt, Lugs, Springs and Tank upgrades of five levels

• Missions: three at a time from real runs, a reward when claimed, a harder one in its place; a 7-day daily reward by the phone's date

• Leaderboard: the player's best among seven course regulars, the ten best runs, and a weekly board with Supabase

• Game feel: mud clods and dust puffs, puddle splashes, coin pops, a camera kick and stars on a crash, haptics on pickups and flips, all optional

Screens

• Game: ready, driving, paused and the result board with the crash kept in view

  

• Garage: the truck on a turntable in the shed, bodies and upgrades

  

• Missions: the daily reward board, missions and the week's driving

  

• Leaderboard: trucks on mud mounds, rival drivers and your ten best

  

• How to play, Mudline Plus, Settings, About, Terms of Use and Privacy Policy

Backend

The weekly board is a Supabase migration: every run starts on the server and submit_score takes each run once, refusing one longer than the time since it started, faster than the truck can go or with impossible coins. Anon reads no table; the board shows names, bests and places only, and Delete my data removes a player's runs, name and anonymous sign-in.

Monetisation

One non-consumable purchase, Mudline Plus, through RevenueCat: every truck in the garage and double coins. No ads, no loot boxes, nothing that looks like gambling. Without store keys the Plus page shows a sample price and sells nothing.

Setup

• Run the migration on your Supabase project, allow anonymous sign-ins and add its URL and key

• Create the mudline_plus product, the plus entitlement and the default offering in RevenueCat and add its keys

• Reskin the land, the trucks, the prices and the rivals in a handful of files