HYZER

Links disc golf on Rubha Machair, a bare headland over the North Atlantic. Six holes, par 21, three discs, right-hand backhand — and a flight model in which nothing is a drawn curve.

A disc is a gyroscope. Its pitching moment precesses against its spin, ninety degrees ahead: thrown fast it rolls right and turns, and as the airspeed dies it rolls left and fades. Where that crossover sits is all "stability" has ever meant. Turn, fade, the flex line that swings out right and comes back, the spike hyzer, the skip off the hardpan — every shape in this game falls out of that one torque and the wind. Which is the whole trick of it: you never aim at the basket. You aim into a line, pick the disc whose flight bends the right way, and let the physics bring it home.

How to play — four keys: ←/→ swing the throwing line, ↑/↓ tilt the release from hyzer to anhyzer, hold SPACE to build power and release to throw, TAB to change disc. The DRIVER carries 100 m and finishes well left of where you pointed it; the MID holds whatever line you put it on; the PUTTER is short, soft and honest. Mouse-drag and touch play the same game, and H or ? shows the controls at any moment. Sea and loch are out of bounds — a stroke, and you throw again from where it went in.

The course — MACHAIR, an open opener; THE GAP, thirteen metres of air between two thorn stands; THE BAY, a dogleg whose direct line crosses forty metres of sea; THE DROP, eighteen metres down to a shelf above the water; LOCH NA GAOITHE, a 250 m par 5 with a hero line over the loch and a dry road round it; and CAIRN KNOWE, uphill to a blind flag. The wind is different on every hole and gusts on its own weather; the flags and the grass tell you what it is doing. Lowest total strokes wins the board.

How it was made — one run of the house game-drop routine: the concept and every word here by the lead, the simulation built and tuned by a Claude Opus 5 agent against an automated browser harness — measured reference flights for all three discs in calm, headwind and tailwind, scripted full rounds, and a search-driven expert that carded 6-under with an ace to prove the course is honest. The whole thing is one self-contained HTML file.