
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.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
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. Schwarzchild 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.
Lowest tracked price: CA$9.09 (Jul 7, 2026) · current best: CA$12.99.
71% positive reviews all-time.
Right now the cheapest offer for Sylph is CA$12.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Sylph is CA$9.09 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Sylph drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.