Ova Motion
Sign inOpen editor
FeaturesTemplatesRuntimesDownloadDocsSupportSign in
Home / Runtimes
Runtimes · Unity

Animated game UI in Unity.

A Unity package with EggPlayer, a component that plays an .egg into a texture on a RawImage or the object's Renderer and forwards UI pointer events to its state machine.

Open the editor See templates
In short

In Unity, add the com.egg.runtime package from disk, import your file as name.egg.bytes, and add the EggPlayer component to a RawImage or a Renderer. It plays the state machine into a Texture2D and forwards UI pointer events; the EggRuntime class sets inputs and view model values from C#.

Platform
Unity (macOS, Windows, Linux, Android, iOS)
Binding
C# package com.egg.runtime
Draws with
Texture2D on a RawImage or Renderer
Same file everywhere
One .egg plays the same on every runtime
License
MIT or Apache-2.0

Set it up

  1. Package Manager › Add package from disk › choose the package.json of com.egg.runtime.
  2. Put the native library for each platform in Runtime/Plugins.
  3. Rename your file to name.egg.bytes so Unity imports it as a TextAsset.
  4. Add EggPlayer to a RawImage (UI) or an object with a Renderer, and assign the file.
  5. Set inputs and view model values from your scripts through its EggRuntime.

Last checked against the product on 2026-10-15.

Examples you can play

All templates
Game HUD: an Ova Motion templateInterface
Game HUDTake hits, drink potions, cast spells and finish quests: bars drop with a trail, damage floats up, a level-up bursts with light, low health pulses red.
RPG inventory: an Ova Motion templateInterface
RPG inventoryAn RPG bag: hover an item for its card, drag helmets, weapons and shields onto the hero to wear them; the hero and the stats change.
Slot machine: an Ova Motion templateGames
Slot machinePull the lever (or SPIN, or Space): the reels spin and stop one by one, three alike pay by the table and a win throws a shower of coins.
Treasure chest: an Ova Motion templateScenes and effects
Treasure chestTap the chest: it shakes harder and harder, bursts open in turning light, and the loot rises with its rarity, rolled on the odds.

Questions

Can I use it for game HUDs?

Yes. Build the HUD in Ova Motion and set health, mana and score through view models from C#.

What can my code change at run time?

State machine inputs (booleans, numbers, triggers), view model properties bound in the file (text, numbers, colours, enums, pictures, lists), and pictures, sounds and fonts handed over by your app. Your code also reads the current state and the events the file reports.

Is the runtime free to use in commercial apps?

Yes. The runtimes are licensed MIT or Apache-2.0, and what you make in the editor is yours.

Read next

HUDs, menus and characters that feel alive.Rig characters with bones, build menus and HUDs with state machines, script the rest in Luau, and play the result in Unity, Unreal or a web game.Animated UI in Unreal Engine.The EggRuntime plugin adds EggAnimation, a Blueprint type that loads an .egg, plays animations and state machines, takes inputs and pointer events, and draws into a texture for a widget or a material.RuntimesPlay .egg files on the web, iOS, Android, Flutter, Unity, Unreal or through the C API.

Start with an egg.
Ship an interface.

Open the editor in your browser, or download it for macOS, Windows and Linux.

Open the editorDownload