Elemental Observatory

Start with four elements and combine them to discover a collection of 64. Experiment at the orbital workbench, explore your codex and recipe history, and use hints when you need a nudge.

Tap two cards and press Combine, or drag one element onto another. Progress is saved locally in your browser; use JSON export to back it up. The in-game demo reward is simulated and involves no real ads or purchases.

Download and extract the ZIP, then open index.html in a modern browser.