Overview

Planet Plinko is a digital recreation of the classic Plinko game, set against a space backdrop and built completely from scratch in Unity using C#. Every element was designed and implemented solo over the course of a couple weeks. The result is a polished, fully playable browser game, available as a Unity Web Build for PC.

The Brief

The core challenge for this project was translating a physical game into a digital format while adding meaningful interactivity. The primary technical concerns were accurate collision detection across multiple peg types, a reliable scoring system, and a chip-spawning mechanic where players are limited to exactly seven chips per game, making every drop count.

Peg System Design

The most technically involved aspect of the project is the peg type system, which required different scripted behavior for each prefab:

• Round Asteroid (static peg) — A standard circular peg that interacts with chips using Unity's physics engine with no additional behavior.
• Vertical Oval Asteroid (tint peg) — An oblong peg oriented vertically that applies a blue tint to any chip it contacts.
• Horizontal Oblong Asteroid (moving peg) — A wider peg with a looping horizontal motion, which makes the board less predictable.
• Star Peg (one-use duplicator) — A peg shaped like a star that, on contact, duplicates the chip and then disappears. This rewards players who route chips through it.

Visual Design & Assets

All sprites were created using pixilart.com, with a cohesive pixel art space aesthetic throughout. The game features purple asteroid pegs, a pink star peg, small teal planet chips, and a space board/ background. The visual language is both readable and stylistically consistent, with the distinct shapes and colors making each peg type immediately identifiable during play.