
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.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0/day in the week to Aug 25 → 0/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,400 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
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.
Genres
Reviews
Had some experience with orbital games. Got mad because this is so complicated. Quit. Tried again 4 mins later. Figured it out well enough to change my orbit. realized its not as complicated as it looks. Burned retrograde at the periapsis and apoapsis. got sucked into the singularity. Woke up in some kind of minecraft hell world. 10/10.
A bit of a work in progress but I love it
Neat. I haven't managed to do much so far but I appreciate the complexity. Managed to start the ship on my own by using the error messages on the MFD as clues, orbited the planet I was near, and did a little open space flight. Looking forward to figuring things out and finding some cool stuff out there somewhere eventually.
Media

Related
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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English**languages with full audio support
Would recommend, fun to play and easy to run. The only few things I had that I didn't like was the planets not having any sort of ground, I got so confused, and also how the cockpit is just screens and a box with a grid texture. Would also like a 3rd person
Good game
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
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| — | 0 | — | — | |
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| $7.5K | 84 | 79% | $2.79 | |
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