LensingA puzzle game about bending light with gravity
Gravity is your only tool: where do you put a moon, a star or a black hole so the light finds its way home?
Summary
Place masses to bend beams of starlight into telescopes. Thirty hand-made levels, an endless mode and a level editor — the one project here made purely for fun.
What you can do
- 30 hand-made plates in three chapters, each with a reference solution and a par.
- Endless mode: puzzles built around hidden masses, so every one is solvable.
- A level editor with share codes; winning a test play stores a solution for hints.
- Black holes that capture light, voids that push it away, tinted nebulae and focusing fans of beams.
- Synthesised sound, haptics, full keyboard play and screen-reader announcements.
How it works
Each beam is integrated as a ray that bends toward every mass with a pull falling off as M/r². Far from a mass this reproduces Einstein’s 1/b deflection law; a black hole captures beams aimed inside its critical distance and loops those just outside.
The hard part
Making a physics puzzle genuinely fun: a smooth difficulty curve, each level’s solution window measured by a level-lab script, and beams re-tracing at 60 fps while you drag.
Validation
- Weak-field deflection vs 2μ/b (b = 3 000)
- +0.24 %
- Starlight grazing the Sun
- 1.7512″ vs 1.75″
- 15 strong-deflection cases vs the exact integral
- worst 0.028°
- Endless generator, 6 000 puzzles
- all solvable, none won empty
- All 30 plates
- won by dragging in the real interface