Stellar Observatory

**Collect starlight. Process data. Catalog the cosmos.**

Run a growing observatory from a hilltop refractor to galactic-scale arrays. Tap to observe, buy equipment, ride the day/night cycle, and unlock deeper facility tiers as your sky catalog fills with real astronomy targets.

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**Play in your browser above** — no download required.

**First load:** the browser build is ~40 MB. Give it 30–60 seconds on a typical connection. After that, progress saves locally in your browser.

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**How to play**

1. **Observe** the sky to gather starlight

2. Buy **Telescopes**, **Photometers**, and **Grad Students** in the shop

3. Convert starlight into **Data** and **Discoveries**

4. Fill the **Sky Catalog** (25 real objects — from Andromeda to GW170817)

5. **Prestige** to a darker site for permanent bonuses, then charter the **Galactic Network** for endgame scaling

Built-in tutorial walks you through the basics. Works with mouse or touch.

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**Features**

- **Idle / incremental loop** — starlight, data, and discoveries as three production chains

- **Day / night cycle** — starlight yield drops during daylight; upgrades and prestige help you push through

- **Sky catalog** — 25 named deep-sky targets, each with a short astronomy blurb and a permanent bonus

- **Facility tiers** — Hilltop Site, Radio Wing, Space Network, Deep Field Array

- **Two prestige layers** — Dark-Sky Rating (run reset) and Galactic Mandate (meta reset)

- **24+ producers** — telescopes, correlators, orbital platforms, Mandala Arrays, and more

- **Research upgrades** — click power, global output, daylight resistance, producer discounts

- **Achievements and journal** — track milestones from First Light to Master Cartographer

- **Offline progress** — earn while away (up to 24 hours)

- **Save tools** — local autosave, backup, export/import, and cloud save codes

- **Ambient audio** — day/night soundscapes and UI feedback

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**Facility progression**

- **Hilltop Site** — available from the start

- **Radio Wing** — 500 lifetime discoveries

- **Space Network** — Dark-Sky Rating 3

- **Deep Field Array** — Galactic Mandate 1

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**Controls**

- Click / tap — observe, buy, navigate tabs

- Shop tabs — Equipment, Research, Catalog, Dark-Sky, Galactic

- Journal — stats, achievements, save management

Portrait-oriented UI — comfortable on phone browsers and desktop.

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**Save data**

Progress is stored **locally** on your device (browser storage or app data). Clearing site data or uninstalling removes your save. Use **export / cloud save codes** in the journal to back up or move between devices.

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**Version 0.2.0**

- Cloud save codes

- Save backup and export

- New achievements

- Shop afford hints

- Catalog unlock toasts with icons

Made with **Godot 4.6**. Feedback, ratings, and comments are very welcome — they help more players find the game.

*Stellar Observatory is a fan-made idle game with an astronomy theme. Celestial object names and descriptions are inspired by real targets; this is not an educational or scientific simulation.*