30 Free Code Snippets for Unity Game Development (2025)

Smooth 2D/3D movement with acceleration, deceleration, and physics-based controls.
Perfect for: Platformers, top-down games

Cross-platform input handling for keyboard, mouse, gamepad, and touch controls.
Perfect for: Multi-platform games, accessibility

Smooth camera following with offset, smoothing, and boundary constraints.
Perfect for: 2D games, platformers

Modular health system with damage, healing, and death events.
Perfect for: RPGs, action games

Performance optimization for bullets, enemies, and particles with object reuse.
Perfect for: Shooters, mobile games

Centralized audio system for music, SFX, and 3D spatial audio.
Perfect for: All game types, immersive audio

Smooth UI transitions with fade, scale, and slide animations.
Perfect for: Menu systems, HUD elements

Data persistence for player progress, settings, and game state.
Perfect for: All game types, user experience

Behavior tree system for patrol, chase, attack, and idle states.
Perfect for: Action games, AI enemies

Visual effects system for explosions, trails, and environmental effects.
Perfect for: Visual polish, atmosphere

Loading system with progress bars, fade effects, and async loading.
Perfect for: Large games, seamless transitions

Item management with drag-and-drop, stacking, and equipment slots.
Perfect for: RPGs, adventure games

Conversation system with branching dialogue, character portraits, and choices.
Perfect for: Story games, RPGs

Countdown timers for gameplay mechanics, cooldowns, and events.
Perfect for: Puzzle games, time-based mechanics

Camera shake for impacts, explosions, and dramatic moments.
Perfect for: Action games, visual feedback