Games similar to Rebel Galaxy:

Inspired by the adventure and imagination that we love from classic science-fiction, No Man's Sky presents you with a galaxy to explore, filled with unique planets and lifeforms, and constant danger and action. In No Man's Sky, every star is the light of a distant sun, each orbited by planets filled with life, and you can go to any of them you choose. Fly smoothly from deep space to planetary surfaces, with no loading screens, and no limits. In this infinite procedurally generated universe, you'll discover places and creatures that no other players have seen before - and perhaps never will again.

You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below and gather the resources you need to repair your ship and set off to explore the vast, infinite universe… In Starbound, you create your own story - there’s no wrong way to play! You may choose to save the universe from the forces that destroyed your home, uncovering greater galactic mysteries in the process, or you may wish to forego a heroic journey entirely in favor of colonizing uncharted planets.

Space Engineers is a sandbox game about engineering, construction and maintenance of space works. Players build space ships and space stations of various sizes and utilization (civil and military), pilot ships and perform asteroid mining. Space Engineers utilizes a realistic volumetric-based physics engine: all objects can be assembled, disassembled, damaged and destroyed.

Battle Brothers is a turn based strategy RPG mix which has you leading a mercenary company in a gritty, low-power, medieval fantasy world. You decide where to go, whom to hire or to fight, what contracts to take and how to train and equip your men in a procedurally generated open world campaign. Do you have what it takes to lead them through bloody battles and to victory? The game consists of a strategic worldmap and a tactical combat layer. On the worldmap you can freely travel in order to take contracts that earn you good coin, find places worth looting, enemies worth pursuing or towns to resupply and hire men at. This is also where you manage, level up and equip your Battle Brothers. Once you engage a hostile party the game will switch to a tactical map where the actual fighting takes place as detailed turn based combat.

Empyrion - Galactic Survival is a 3D open world space sandbox survival adventure. Build mighty ships, menacing space stations and vast planetary settlements to explore, conquer or exploit a variety of different planets and the allegedly empty space!

Miscreated is a multiplayer online hardcore survival game set in a post-apocalyptic future. You will need to survive against mutants, players, and even mother nature herself.

The Earthlings have joined the interstellar club. The galaxy will never be the same. The year is 2086 and Earth has detected an alien distress call originating from the surface of Triton. In response, Star Control is formed with you as The Captain of Earth's first prototype starship.

The Long Journey Home combines the endless freedom of space with a new open questing system that always leaves you in command. Deliver the stranded Glukkt to his homeworld as he asks, or to your new slaver friends? Attempt to make allies with everyone, or pin your hopes on the tougher races, and hope they never turn on you? Jump by jump, make hard decisions and live with the consequences, in a universe that is never the same twice.

Force of Nature is an indie open world sandbox game with fighting, crafting, building and farming systems.

StarMade is a 3D sandbox space shooter created by Robin "schema" Promesberger, founder of Schine. The game allows players to explore the vastness of space; building factories; creating ships, space stations and structures out of various block types. Both single-player worlds and multi-player servers are available players. StarMade is currently in Alpha, and is a free-to-play game.