Grand Prix Track Designer MZ — Racing Game & Track Builder Plugin

Build it. Race it. Own the grid. Or Upgrade The Files Even Further!

Grand Prix Track Designer MZ drops a complete 3D racing game into RPG Maker MZ. Design a circuit and its stadium like a Sims build, tune and paint your car in the garage, then race it in chunky, fogged, dithered N64-style 3D. Use it as a standalone game from the title screen, or as a minigame inside your RPG.

Three plugin files. No extra assets, models or audio needed: every car, track, prop and sound is generated by the plugin.

Race

• 8 modes: Practice, Time Trial (Bronze/Silver/Gold), Sprint, Elimination, Drift Attack, Arcade, Takedown Rampage and Tournament (career championships).
• 1st- and 3rd-person cameras: close and far chase, cockpit onboard and nose cam. Press C to switch.
• Arcade chaos: nitro, takedowns, near misses, airtime and Traffic Checks through civilian traffic, all feeding a combo multiplier up to ×5. Slow-motion crash cam on every takedown.
• Destruction: tyre walls, oil drums, crates, cones and corner distance boards go flying. Cars smoke, catch fire and wreck.
• Sim touches: ERS deploy, DRS on long straights, slipstream, tyre wear and pit stops in Tournament mode.
• Assists: Forza-style racing line (green = go, yellow = ease off, red = brake), 3-second rewind, live lap delta, ghost car in Practice and Time Trial.
• Replays: watch every race back with trackside TV cameras, switch drivers and fast-forward.
• 16 rival drivers in 8 original teams, with AI that follows the racing line, overtakes, pits for tyres and hunts you in takedown modes.

Build tracks

• Track Brush: drag a path across the grid and straights and corners lay and orient themselves.
• 10 track pieces: Start/Finish, Straight, Corner, 2×2 Sweeper, Banked Corner, Chicane, Pit Straight, Ramp, Jump Hump, Tunnel.
• 18 stadium props: grandstands, VIP club, team garages, TV tower, floodlights, billboards, Ferris wheel, hotel, car park, lake and more.
• Live ratings: Flow, Speed, Technical, Overtaking, Safety, Spectacle, Prestige and Comfort, plus attendance and hosting revenue. Grandstands by corners and marshals near bends score extra.
• 5 themes: Grand Prix Day, Sunset Coast, Desert Mirage, Alpine Ridge, Neon Night City. Plus day, dusk or night (floodlights matter), clear, overcast, rain or fog, three track widths, four curb styles and four barrier styles.
• Budget, undo/redo, Auto-Decorate and one-click Test Drive. Host races on your own circuit to earn the money for your next build.

Customise and upgrade

• 4 chassis: open-wheel Formula, GT Coupe, Street Tuner and the Formula EVO.
• 28 parts across engine, aero, tyres, gearbox, ERS/nitro and brakes, unlocked with money and fame. Aero changes the size of your rear wing.
• Tuning sliders for gearing, downforce and steering.
• Performance Index: every car is rated D, C, B, A, S or X, and rivals are matched to your class.
• Paint shop: 17 colours, 5 patterns, race number, helmet, rim colour and underglow.

What's in the download

File	What it does
GPTD_1_Core.js	The engine: 3D renderer, physics, AI, race rules, replays, sound
GPTD_2_Design.js	The content: cars, parts, track pieces, props, themes, modes, career
GPTD_3_Bridge.js	Connects both to RPG Maker MZ: menus, HUD, input, saves, parameters, plugin commands
README.txt	Setup, controls, parameters, plugin commands, add-on API

Setup in 60 seconds

1. Copy the three .js files into js/plugins/.
2. In the Plugin Manager, add them in order: GPTD_1_Core → GPTD_2_Design → GPTD_3_Bridge.
3. Choose a Startup Mode on GPTD_3_Bridge: a title-screen command, boot straight into the racing game, or plugin commands only.
4. Playtest.

Controls

Action	Keyboard	Gamepad
Throttle / brake	Up, W / Down, S	RT or A / LT or X
Steer	Left, Right, A, D	Left stick
Boost (ERS / nitro)	Shift or N	RB
Handbrake drift	Space	LB
Camera	C	Y
Rewind 3 seconds	Backspace or T	Back
Reset onto the track	R	L3
Pit request	P	—
Pause	Esc or X	Start or B

The Track Designer uses mouse (click and drag to build, wheel to zoom, right-click for the menu) or keyboard (arrows, Enter, R to rotate, Q and E to turn the camera).

For your RPG

• Plugin commands: Open Hub, Quick Race, Open Garage, Open Track Designer, Open Career, Add Money, Add Fame, Unlock Everything, Store Profile in Variables.
• Race results to variables and switches: finishing position, best lap in milliseconds, and a win switch.
• Save handling: in embedded mode the racing profile travels inside your normal save files; in title or boot mode it has its own autosave slot.
• Parameters: starting money, player name (or the party leader's), menu and race BGM, render scale, soft or sharp upscale, 16-bit dither, speed blur, slow-mo cam, km/h or mph.
• Add-on API: GPTD.Design.add() adds your own parts, props, themes, teams, championships and preset tracks from a small plugin.

Compatibility

• RPG Maker MZ 1.x, desktop (Windows/macOS) and browser deployment. Needs WebGL, which MZ already requires.
• Runs on its own canvas, so it does not touch your maps, battle system or other plugins.
• Mobile deployment has not been tested.
• All team names, drivers and branding are original. It is not affiliated with any racing series.

Terms of use

• Use in unlimited commercial and non-commercial RPG Maker MZ projects you make.
• Credit is appreciated but not required: "Grand Prix Track Designer MZ by RPG_Maker_Plugins".
• Do not resell or redistribute the plugin files themselves, alone or in an asset pack (unless within the Whitelabeled Bundle).
• Do not use the files to train AI models, but DO upgrade it to your specific tastes.

More from rpg-maker-plugins

Looking for more? Browse the full catalogue at rpg-maker-plugins.itch.io: minigames, tools, tilesets and battler packs for RPG Maker MZ.

v0.3.0 — Found a bug or want a feature? Leave a comment below.