This a simple sample game powered by the Gemma.cpp for Unity plugin, and demonstrates the use of Gemma 3 in games.

The game features non-player characters (NPCs) whose dialogue is dynamically generated by a Gemma model.

The player moves between rooms to talk to Android-themed NPCs that generate real-time dialogue from predefined character personalities. The goal is to interrogate each Android to discover a secret word, allowing progression to the next room.

One such NPC is Chef Gus, a highly-regarded and temperamental chef. Gus's role and personality, along with game logic and rules, are defined in the Gemma 3 prompt, guiding his interactions and the riddle he presents to players in the game.

For more information, read the blog post about the game.

This is not an officially supported Google product.

• WASD: Movement
• E: Interact with NPCs

The player can type messages to the NPCs in the chat panel that appears upon interaction.

Pre-built releases are built using CI/CD and are available under the Releases tab. These releases bundle a copy of Gemma 3 4B.

1. Download the runnable game from [release][game_download].
2. Extract the ZIP file.
3. Double-click the Gemma Journey icon.

The game targets Unity 6 (6000.0.33f1) and requires the Gemma.cpp for Unity plugin along with a copy of Gemma 3 4B.

1. Open the GemmaSettings scriptable object in Assets/GemmaSampleGame or create one if it doesn't exist.
2. Note the Model Type and Weight format in GemmaSettings.
3. Go to Kaggle to download the appropriate weights and tokenizer.
   • Example: If ModelType is Gemma 3_4B and Weight format is sfp, download the Gemma C++ variation 3.0-4b-it-sfp.
4. Place the downloaded files under Assets/StreamingAssets/[folder name].

For other variations, go to Assets/GemmaSampleGame and update the GemmaSettings scriptable object's Model type, weight format folder, and filename.

5. Open Build Profiles by clicking File > Build Profile.
6. Click Build.

• UniTask - async/await integration for Unity
• VContainer - dependency injection for Unity