Make Your Solar System is a free, casual gravity simulation game developed by Javier Gómez Pereda. In this game, you can create your own solar system by dragging and dropping planets to create stable orbits around a star. The game offers several modes, including Sandbox, Time Attack, Destroyer, and Supernova.

In Sandbox mode, you can experiment with all maps and create the solar system of your dreams. In Time Attack mode, you can score higher points by creating planets with high mass, but be careful not to make the system unstable. Destroyer mode challenges you to destroy specified objects in the minimum possible time. And in Supernova mode, you must avoid impacts and resist as much as possible as an unstable hypergiant blue star is about to explode.

The game's graphics are simple yet engaging, and the user interface is easy to navigate. In future versions, the developer plans to add more objects such as black holes, missions, backgrounds, and music. Missions and a glossary will also contain educational concepts about astronomy.

Overall, Make Your Solar System is a fun and addictive game that offers a unique experience for those interested in astronomy and gravity simulation games. It's a great choice for anyone looking for a casual game to play in their free time.