Every checked-in example project and what it demonstrates.

Examples tour

The checked-in example projects double as executable engine probes. If several examples repeat the same workaround, that is evidence of a missing engine feature.

Isometric tower-defense example — `isometric_base_builder`

Fighting game example — `fighting_game_2d`

3D Galton physics example — `physics_3d_galton_board`

Destruction lab example — `destruction_weapons_3d_lab`

Run any example:

demi validate examples/minimal_3d
demi run

Start small

Project	Shows
`minimal_3d`	Introductory 3D scene: transforms, glTF materials, character controller, pickups, projectiles, debug colliders
`minimal_voxel`	Voxel world sections and procedural mesh building
`minimal_2d_android`	2D game packaged for Android, with server certs
`minimal_2d_android_server`	Dedicated DTLS server for minimal_2d_android
`production_2d_foundation`	Production-shaped 2D base: scenes, HUD, input, saves

2D, isometric, and UI

async_tasks demonstrates responsive movement and HUD actions during a worker Lua calculation, explicit shared progress data, and an asynchronous SQLite query.

Project	Shows
`fighting_game_2d`	Animation-timed collision, input buffers, command recognition
`isometric_base_builder`	Isometric grid placement, tilemaps, buildable entities
`chess`	Local chess against a built-in engine
`physics_2d_galton_board`	2D Box2D stacking, contacts, deterministic simulation
`ui_showcase`	Responsive HUD: layout, themes, focus, virtualization
`main_menu_animated`	Animated menu driven by data assets (Data.load + gui_animation)
`main_menu_gif`	GIF/image animation in menus
`main_menu_lang`	Locale switching and localization files

3D systems

Project	Shows
`animation_3d`	Skeletal clips through the animation state machine; crowd count 1–2000 (default 64)
`third_person_foundation`	Third-person controller, orbit camera, character movement
`souls_boss_arena`	Combat loop with health, hitboxes, and animation states
`procedural_spider_3d`	Raycast-placed procedural legs
`physics_3d_galton_board`	Jolt stacking and contact determinism
`shadows_3d`	Directional lights and shadow budgets
`performance_3d_lab`	Repeatable load probes and profiler reports

Terrain authoring

See the terrain guide for the editor workflow.

Project	Shows
`terrain_3d`	Landscape recipes, biome rules, painting and sculpting
`terrain_graph_3d`	Connected modules, branching noise/mask blending and erosion

Destruction

Project	Shows
`destruction_3d_lab`	Localized physical splits of a compound arch
`destruction_weapons_3d_lab`	Hammer timing, swept rockets, native impact adapters
`fracture_prefab_lab`	Fracture components on ordinary prefabs

Platform, data, and ops

Project	Shows
`asset_streaming_showcase`	Addressable groups, budgets, load/unload cycles
`saves_simulation_debugging`	Save slots, migrations, debug overlays, replays
`multiplayer_ffa_shooter`	Host-authoritative sessions, contracts, prediction

Using examples as probes

Validate before running: demi validate examples/<name>.
Compare expanded documents: demi scene diff, demi scene expand.
Profile with the example's own scene to get comparable numbers.
Android-qualify with a physical device: demi test android --serial <device>.

When an example needs a package (health, destruction weapons, Kenney textures), install it first with demi package install from that project directory.