DROP//SAFE: Lander Builder

Build a landing pod, drop it on another planet, and bring the cargo home in one piece.

Every mission gives you fragile cargo — a glass flask, an egg, a tiny sprout — and a budget. Drag parts onto the grid around it: frames, cushions, airbags, parachutes, heat shields and retro rockets. Then press DROP and watch your design fall through the sky.

HOW IT PLAYS
• Build: snap parts onto a grid around the cargo. A live status panel estimates cost, mass, stability, heat protection and survival.
• Program: set up a no-code autopilot. "When altitude is below 150 m, deploy the parachute." Sensors, conditions and actions — no programming needed.
• Drop: a real physics simulation plays the whole fall: drag, heat on entry, parachutes that can tear, airbags that can burst, a hard or soft touchdown.
• Improve: if it breaks, the parts that failed are outlined in red. Fix them and drop again.

THREE STARS AND A BONUS
Each mission has three goals, such as keeping the cargo intact, staying under a target cost or touching down slowly. Land upright for a bonus medal.

SHARE YOUR LANDINGS
• Every landing is saved automatically, so you can replay it.
• Export a vertical 9:16 video of the landing.
• Share a design code or QR code. The simulation is deterministic, so the same design lands the same way on every device.

FREE TO PLAY
Mars and the Moon — 20 missions — are free, with up to three autopilot rules.

DROP//SAFE PRO (one-time purchase)
• Earth-like and Venus-like planets: 20 more missions with wind, thick air and 300 °C heat
• Sandbox: every part, no budget, any planet
• Unlimited autopilot rules

No ads. No subscription. No account. Your progress stays on your device.