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Sylph

Operate a spacecraft at the edge of a singularity. Use realistic orbital mechanics and Newtonian physics to explore a star system around a black hole and what lies beyond.

Steam Page
Release
April 8, 2026
115 days ago
Steam Reviews
Mostly Positive14 reviews71.4%

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Updated: Jul 10, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 10, 2026Publisher scaleThe operating scale of the game's publisher.
Updated: Jul 10, 2026Publisher statusHow the game's publishing relationship is classified.
Search Google: How is Sylph and Softmax Foundries funded?FundingThe known source of funding behind the game.
Search Google: Who controls the creative direction and IP for Sylph and Softmax Foundries?Creative controlWho appears to retain creative control of the game.
Updated: Jul 10, 2026Release statusWhether and how the game has been released.

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About the Game

Sylph is a first-person spaceflight simulation with realistic orbital mechanics, Newtonian physics, and ship systems management set in a star system orbiting a black hole. Explore one of the most detailed and accurate black hole simulations ever rendered in real time in interactive software. Schwarzschild geodesic ray tracing, gravity funnel, event horizon, and what lies beyond. Built on the Sylph engine, a bespoke engine built from the ground up with no boundaries or speed limits.  

CORE FEATURES:

  • Open world and scenarios.

  • Docking mechanics with capture envelope.

  • Instant time skip down to the minute. 

  • Realistic orbital mechanics. Sphere of influence transitions. Transfer planner and rendezvous solver.

  • Real time orbital telemetry computed from live state vectors. 

  • Momentum-based 6DOF flight model. Each thruster enacts real Newtonian force on the craft.

  • 10 holographic cockpit panels. Nothing is decorative. 

  • Ship systems management with startup sequences, electrical load management, pump and valve operation. All independently modeled and derived from real physics. Failures are cascading and emerge from the simulation state.

  • Fully modeled closed loop expander-cycle bipropellant combustion. Rotational inertia, turbopump characteristic curves with flow-dependent degradation, cavitation modeling, turbulent flow losses, boost pump to turbopump series staging, line charge/drain dynamics, heat soak, regenerative cooling.

  • Independent lower thrust system with forward and aft modes. 12 individual RCS thrusters with rotation and linear control.

  • 8 Autopilot programs operating through the physical thruster simulation. 

  • Electrical simulation with state-of-charge and voltage sag, two independent generators, circuit breakers, power draw, proportional load sharing, and overload trip.