Build the rocket.
Trust the physics.
Starwelds is an independent studio making space simulation and construction games where nothing is faked — the orbits are real, the gravity is real, and the rocket you land is the one you built.
Ellipse: Space Pioneer
Design your rocket from scratch, plan your mission, and travel beyond Earth with physics that works exactly like the real thing — from low Earth orbit to the surface of Mars.
Real orbital mechanics
Nothing is faked. Gravity, thrust, and trajectory behave the way the real solar system does.
Assemble from parts
Engines, fuel tanks, parachutes, separators. Stage your rocket exactly how you want to fly it.
The inner solar system
Mercury, Venus, Earth, the Moon, Mars, and Phobos — reachable, landable, real.
Games built the way engineers build things.
We're a small, independent studio out of Blumenau, Brazil, making space simulation and construction games. Our focus is narrow on purpose: realism, physics, and systemic design — systems you can trust, in worlds you can take apart and rebuild.
Simulate it, don't fake it
If it looks like orbital mechanics, it has to run on orbital mechanics. We'd rather ship fewer features that are true than more that are convincing.
Give players real components, not presets
Engines, tanks, separators, parachutes — the pieces are honest parts of a system, and what you build with them is genuinely yours.
Let the rules interact, not script the outcome
Gravity doesn't know it's in a game. Reentry, staging, and landings emerge from the same physics, every time, for every player.
No ads, no data collection
Ellipse is free to download and collects nothing. We'd rather earn attention with the simulation itself.
The solar system is waiting. Build your rocket. Explore.
Starwelds Desenvolvimento de Jogos LTDA
Blumenau, Santa Catarina, Brazil
Independent studio, active development since Ellipse's early releases
Android · Windows
Talk to mission control.
Questions about Ellipse, press inquiries, or feedback on a landing — all of it reaches the same small team.
Blumenau, SC · 89036-400
Brazil
LAT -26.9194 LON -49.0661
Blumenau, Santa Catarina, Brazil