I made Tempestarium, a little pixel-art ambient weather app

I’ve just released the first demo of Tempestarium, a small pixel-art weather instrument for Windows/web.

It isn’t really a game. There are no objectives or time pressure. You choose the weather, lighting and time of day, then leave the scene running as background atmosphere through weather evolution.

The current demo includes most of the features, the main weather controls and four prepared scenes, as well as weather evolution. The rest of the features will come in the full version coming soon.

AI-assisted tools were used during development for code, text, graphics and sound.

Its weather is driven by deterministic state, its visuals use sprite assets, and its ambience is synthesized at runtime.

The difficult part was keeping everything connected to the same weather state. Systems that worked in isolation could still create inconsistencies between the renderer, audio and controls, so the project needed repeated manual review and fairly strict boundaries between systems.

The Windows demo is here:

https://odinz0181.itch.io/tempestarium

The executable is currently unsigned, so Windows may show a SmartScreen warning.

If you want to read more or try the web version without downloading the executable (it should also run well on mobile), visit:

https://discover.tempestarium.app/

I’d be interested in comparing experiences with anyone using AI assistance on a creative codebase where a consistent visual/audio direction matters.