One burn, the moons' gravity, and a target far away, make the fuel last.
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How to play
Aim a burn from your spacecraft, then let gravity fly it. Bend your path with slingshots off the moving moons to reach the target orbit while spending as little fuel as possible.
Drag from the craft to aim a burn, longer drag means more delta-v (fuel)
Release and Launch to hand control to gravity
Use the moons' pull to curve your trajectory and gain free speed
Reach the target orbit; reset and re-plan if you miss
Game modes
Easy, Normal or Hard difficulty
Daily course or Practice for fresh setups
Controls
Desktop: press near the craft and drag to aim the burn, release, then click Launch
Phone & tablet: drag from the craft with a finger, lift off, and tap Launch
Tips & strategy
Time your pass so a moon's gravity is pulling you the way you want to go
A small, well-aimed burn plus a slingshot beats a big, fuel-hungry one
Plan the whole arc before launching, re-planning is free, wasted fuel isn't
What you'll learn
Orbit Sling teaches orbital navigation and gravity assists, balancing fuel against the pull of gravity to reach a destination.
Skills: orbital mechanics, gravity, gravity assists, energy and fuel budgeting
Best for: roughly grades 8–12 (ages 13+)
For parents & teachers: introduces real space-flight ideas through play.
About Orbit Sling
Orbit Sling is a gravity-assist space-navigation puzzle about orbits and fuel budgets. It's an original, free browser game built in-house for PlayPendium.
A free, original browser game on PlayPendium. No download, no install.
