Juice Forge Lite - Free Game Feel for Unity

Free game feel in one line of code. Juice Forge Lite is the free core of Juice Forge: screen shake, hit stop, slow motion, squash and stretch, knockback, camera kicks, zoom punches, screen flashes, particle bursts and sounds - combined into feedback stacks you trigger from code or a UnityEvent.

Juice.Play("Combat/Hit Heavy", enemy); - that is the whole setup.

What you get (free, commercial use allowed)

• 73 feedback types: Camera & Screen (15), Time (4), Transform (23), Particles & Audio (13), Flow & GameObject (18).
• Juice Player: parallel, sequential or random stacks with delay, chance, cooldown, repeats, loops, signals, intensity and distance falloff.
• 20 ready presets (combat hits, explosion, jump, land, dash, coin, gem, power-up, UI press / popup / error) and 21 sounds synthesised by our code.
• One-liners: Juice.Play, PlayAt, Impact, Shake, HitStop, SlowMotion, Flash, Text (damage numbers).
• Safety built in: global Juice slider 0-200%, per-group strength (shake, flash, motion, time, audio) and a flash limit of 3 per second.
• Built-in, URP and URP 2D with no setup; screen effects need no post-processing. Old Input Manager and Input System.
• Demo: the Juice Ladder - the same fight from no juice to full juice in 9 steps, plus 6 one-line preset buttons.

Lite and full Juice Forge

• Lite: 73 feedbacks, 20 presets, 21 sounds, Juice Player, timeline inspector, one-line API, accessibility scales.
• Full Juice Forge adds: 154 feedbacks (hit flash, dissolve, outline, 11 springs, UI and UI Toolkit juice, URP post-processing, haptics, TextMeshPro effects, lights, physics, Animator), 227 presets with a preset browser, edit-mode preview with scrubbing, the Make it Juicy wizard, an accessibility menu prefab and the Juice Profiler.

Upgrading: import the full Juice Forge over Lite - same paths and GUIDs, nothing to delete, and your Juice.Play calls get the richer presets automatically. Find it here: Juice Forge on itch.io.

Full C# source, assembly definitions, pooled objects, no dependencies, PDF guide.

Technical details

• 73 feedback types; Juice Player (Parallel / Sequential / Random One), delays, chance, cooldown, loops, signals, channels, seeds
• 20 presets as JSON (same names as the full version), save / copy / paste your own
• 21 WAV sounds (synthesised by our code), particle textures, damage number sprite font
• Accessibility scales (master 0-200%, shake, flash, motion, time, audio, reduce motion, 3 flashes/s limit)
• Editor: Juice Player inspector with timeline (drag to retime), About Lite and Full window
• Built-in, URP, URP 2D; Unity 6000.0+; Input System and Input Manager
• Assemblies: Rasterloom.JuiceForge (+ Editor, Demo); full C# source
• PDF user guide (13 chapters) and Readme

AI disclosure: The C# code, presets and documentation were written with the help of an AI assistant (Claude by Anthropic) and reviewed by us; the demo was tested in Unity 6.6. The sounds were synthesised by our own code and the demo art was drawn with hand-written vector code; no AI image or audio generators were used.

IF IT HELPED

Juice Forge Lite is free, and ratings are how other developers find it. If it made your game feel better, please rate it on this page or leave a comment - bug reports get a reply and the next update fixes them.