**TonightSky** is a relaxing astronomy simulation and educational game that brings the night sky to life.Discover and collect constellation cards, learn astronomy through interactive lessons, capture beautiful star trails, and travel through time to watch the sky change.
Tonight Sky is a relaxing astronomy simulation and educational game that combines a realistic night sky with charming animated pixel art. Discover the beauty of the stars, explore constellations, and learn about the universe at your own pace.
Choose your location and experience a simulated sky featuring over 8,900 stars, the Sun, the Moon, and all 88 constellations.
Watch the sky change with the time of day and the seasons, observe lunar phases, or travel through time to explore the night sky from different dates.
Switch between a realistic sky simulation and a peaceful pixel-art world, complete with animated characters and atmospheric scenery.
Explore the night sky and discover constellations that are visible from your location.
Collect beautifully illustrated pixel-art constellation cards, each featuring astronomical information, constellation patterns, and fascinating stories.
Build your own collection of all 88 constellations!
Keep a small, lightweight window on your desktop to check:
Whenever you want to explore further, open the full interactive sky.
Visit the Astronomy Classroom to discover the science behind the night sky.
Learn about lunar phases, stellar magnitudes, celestial coordinates, seasonal constellations, and more through illustrated lessons and interactive demonstrations.
You can also experiment with time controls and create your own beautiful star-trail images.
Two additional educational expansions are available:
Astronomy History DLC — Explore the history of astronomy, from ancient observations and Ptolemy's geocentric model to Copernicus, Kepler, Newton, and modern discoveries, with interactive astronomical models.
Greek Mythology DLC — Discover the gods, heroes, and legendary stories associated with the constellations through illustrated narratives and interactive lessons.
Look up, explore, and discover the stories hidden among the stars.
Discover the myths behind the stars! Explore Greek gods, heroes, legendary creatures, and their connections to the constellations through 28 illustrated lessons, animated pixel-art stories, character relationships, and interactive educational activities.
Explore the fascinating history of astronomy, from ancient civilizations and Ptolemy's geocentric model to Copernicus, Kepler, Newton, and modern discoveries. Learn through 40 interactive lessons, animated pixel-art scenes, historical figures, and astronomical models.
Minimum
OS version
Windows 10 64-bit
CPU
ntel Core i3 or same level AMD processor
Memory
4 GB RAM
GPU
OpenGL 3.3 compatible integrated or dedicated GPU
DirectX
DirectX 11
Storage
1G
Recommended
OS version
Windows 10 / 11 64-bit
CPU
Intel Core i5 or same level AMD processor
Memory
8 GB RAM
GPU
NVIDIA GTX 750 or better
DirectX
DirectX 11
Storage
4G
Languages Supported
Copyright © 2026 Zihan Wang. All rights reserved. Tonight's Sky includes third-party open-source software and astronomical data used under their respective licenses. Full attribution and license information are provided in the game's Third-Party Notices.