Building a Mini Golf Mini Game: What Actually Works
I spent about three weeks last month prototyping a mini golf mini game for a small indie project. The idea was straightforward — a top-down or side-view putting course with basic physics, multiple holes, and a score counter. What I didn't expect was how many small decisions pile up into something that either clicks or falls apart completely. The core loop is simple: player aims, applies force, ball rolls, collision detection fires, hole detection runs, score updates. That's it. But getting each of those pieces right without hand-holding from a tutorial takes some actual trial and error.
Mini Golf Mini Game Setup
Start by picking your engine. I went with Godot 4 because the built-in physics are decent and the project setup takes under five minutes. Unity works too but requires more overhead if you just want a quick prototype. For a mini golf mini game, you really don't need anything fancy — no shaders, no complex animation systems, no multiplayer unless you're building something bigger. The first real decision is camera style. Top-down gives you clean aiming lines and makes obstacle layout obvious. Side-view lets you show slope and terrain height. I tried side-view first, then switched to top-down because the collision edge cases in side-view were eating into my time. A side-view mini golf game demands gravity simulation on slopes, which means you're essentially writing a custom physics pass rather than using the engine's built-in tools. For the ball mechanic, I used a velocity-based impulse system. Player drags from the ball, a line shows direction and power, and on release the ball gets a force vector applied. The trick is keeping the drag sensitivity consistent across different screen resolutions. I found that mapping drag distance to power using a simple clamp between zero and one, then multiplying by a max force constant, worked fine. No fancy easing functions needed.
Hole detection is where most people hit their first wall. You need to check whether the ball's position is within the hole's radius AND whether the ball's velocity is below a threshold. If the ball is rolling too fast, it should bounce out. I set the exit threshold at roughly ten percent of the max initial force, which felt right after a few playtests. Anything higher made the game feel broken because balls would slide past the hole without registering. I ran into a specific problem during testing that took me two days to track down. On certain tile-based obstacle layouts, the ball would occasionally tunnel through thin walls — walls that were supposed to be solid. The issue was that my fixed timestep was set too low relative to the ball's max speed. When the ball moved more than its own radius in a single physics step, the engine simply skipped over narrow collision geometry. The fix was switching to continuous collision detection on the ball's rigidbody and enabling sweep tests. This added maybe five percent overhead but eliminated the tunneling entirely. Here's something most tutorials won't tell you: the order in which you handle input, physics, and rendering matters more than you'd think. If you update your aim line visual in the render loop but the physics runs on a separate fixed timestep, your aiming direction can desync from where the ball actually goes. I solved this by storing the input direction in a variable during the physics process and reading it during the render process. The line always matches the physics state, even if the frame rate dips.
Get the Full Details
For obstacle design, start with static colliders for walls and moving platforms for any animated hazards. Don't overcomplicate this early. A mini golf mini game thrives on clean, readable layouts. Players need to see the shot before they take it. Crowded courses with too many moving parts make aiming frustrating rather than engaging. I kept my first five holes deliberately sparse — straight shots, one or two turns, maybe a narrow gap. The difficulty comes from precision, not from chaos. The score system is trivial but easy to mess up if you're not careful. Store par for each hole, count strokes, and compare on completion. The common mistake is updating the total score in the wrong place — doing it when the ball enters the hole area instead of when the hole detection actually fires. I watched my score count double on one test run because the ball was hovering near the hole edge and the trigger fired twice in rapid succession. Adding a brief cooldown flag to the hole detection fixed it immediately. One counter-intuitive thing I learned: lower friction coefficients actually make for better mini golf gameplay than you'd expect. High friction makes the ball stop unpredictably near obstacles and feels sluggish. Setting friction to around zero point one on the ball and using a roughness of zero on the ground surface gave me control that felt tight and responsive. Players could plan their shots with actual confidence.
There are tradeoffs you should know about. A pure Godot approach with built-in physics is fast to prototype but limits you if you want advanced features later — like ball spin, wind effects, or custom collision layers. If you're building just for fun or a jam game, it's fine. If you plan to ship this as a polished product with twelve plus holes and leaderboards, you'll probably want to invest in a more structured project setup from the start. There's no shame in keeping it simple, but don't pretend simplicity scales infinitely. Another limitation worth noting: mobile input for a mini golf mini game is significantly harder than desktop. Dragging to aim on a touchscreen without a visible cursor is less intuitive, and screen space is at a premium. I haven't solved this cleanly yet. Keyboard and mouse is where this genre works best right now. If you're targeting mobile, plan for a tap-to-aim interface or a virtual joystick, and test early. Don't wait until the end. For actual development, the structure I ended up using was: a main scene with the camera and UI, a separate scene per hole that loads dynamically, and a game manager singleton that tracks scores and advances between holes. Each hole scene contains the course geometry, the ball spawn point, and the hole trigger. This separation means you can build and test individual holes without reloading the entire game every time.
I'll leave it at that. The basics are straightforward. The real work is in the details — collision thresholds, timing adjustments, and layout readability. Those are the things that separate a prototype from something people actually want to play.
