How it works

Inside Slipstream’s race simulation: lap times, tyre wear and the cliff, fuel, battery, dirty air, slipstream, overtaking, weather, safety cars and penalties, explained.

Lap time

Each lap blends the car’s engine and aero ratings with the circuit’s demands, the driver’s pace, tyre condition, fuel load and driving mode.

Racing and overtaking

Dirty air costs grip behind another car, the slipstream gives a tow on the straights, and passes depend on pace, tyres, battery and driver skill.

Driving modes

Attack, Push, Balanced, Manage and Conserve trade pace against tyre wear, tyre heat, fuel, battery and the risk of mistakes or failures.

Race control

Stopped cars can bring yellow flags, a safety car, a virtual safety car or a red flag, and stewards hand out time penalties, drive-throughs and stop-gos.

Deterministic simulation

Every race uses a seeded, fixed-step simulation, so watching faster or slower never changes the result.

About Slipstream

Slipstream is a free pixel-art racing manager game for your browser, with no download. Sign in to save careers online. Pick one of the eleven teams on the 2026 grid, manage both drivers and make the calls that win races from the pit wall. The public beta includes race weekends, cloud saves and game statistics. Commentary voices are optional and still being improved.