How to Play Trebuchet Trajectory

Trebuchet Trajectory is a counterweight siege physics puzzle. Your goal is to hit the red target with a launched projectile by choosing the right combination of power (counterweight setting) and launch angle. The projectile follows a realistic parabolic arc affected by gravity (9.81 m/s²), and later levels introduce obstacles — walls and barriers that block the projectile's flight path.

Controls: Drag the Power slider to set counterweight velocity, and the Angle slider to set the launch elevation. A dotted preview trajectory appears so you can fine-tune before firing. Press 🚀 Launch (or Spacebar/Enter) to fire. Use ◀ Prev / ▶ Next to navigate levels, and ↻ Reset to clear dials. On desktop, arrow keys also work: Left/Right for power, Up/Down for angle.

Tips & Strategy

Read the dotted preview: The faint red dashed line shows exactly where your projectile will land. Align the end of the trajectory with the target flag before firing.
Watch for obstacles: From Tier 3 onward, gray walls block your path. Choose a steeper or shallower angle to arc over or around them — high power + steep angle can overshoot.
Use the overshoot/undershoot messages: The status line tells you if you're too far or too short by pixel distance, so you know which direction to adjust.
Higher tiers = more dials: Later levels offer 5–7 power and angle options each, giving finer control but harder combinations.

Frequently Asked Questions

Is this game free to play?

Yes! Trebuchet Trajectory is completely free to play in your browser with no download or sign-up required.

Can I play on mobile?

Absolutely. The game is fully optimized for touch controls — drag the sliders and tap the buttons on any phone or tablet.

How many levels are there?

There are 30 verified-unique physics puzzles across 6 tiers of increasing difficulty. Each level has exactly one valid power+angle combination that hits the target.