Skybound Run

Cinevva's analyzer read this game's design doc and its source, then wrote the brief below. "Make your own" hands it to the game creator as your opening message, so you start from a real spec rather than a one-line idea.

Create a browser-based first-person 3D platform-running game titled "Skybound Run". Use a dark navy sky/background with light atmospheric fog and a low-poly, stylized floating-island environment. The camera is a first-person perspective with a small glowing white crosshair at screen center; the player is an invisible first-person runner, starting on the first island at approximately x=0, y=4.2, z=10. Use WASD or arrow keys to move, Shift to sprint, Space to jump, and drag/look input to turn the camera. The player has gravity and can jump across gaps; if they fall below the level, reset them to the starting position.

Build a linear route of five separated floating grassy platforms extending forward into the distance (negative Z), each with a green rectangular grass top and a dark blue-gray faceted/conical rocky underside. The platforms should be arranged approximately as: first island centered (0, z=10), size 12x12 at ground height; second centered (1, z=-2), size 9x9 and 1 unit higher; third centered (-2, z=-13), size 8x8 and 2.4 units higher; fourth centered (2, z=-23), size 10x10 and 4 units higher; fifth centered (-1, z=-35), size 8x8 and 5.5 units higher. Add a thin brighter green rim around each platform. Scatter simple low-poly cube-world trees and tufts of grass across the islands, matching the stylized geometry: trees appear on the first, second, third, and fifth platforms, with grass tufts spread across the route.

Place exactly three glowing cyan-blue faceted crystals to collect: one on/near the first island around (0, y=1.2, z=7), one on the second island around (1, y=2.2, z=-2), and one on the third island around (-2, y=3.6, z=-13). Make each crystal an emissive pale-blue octahedral object that slowly rotates and gently bobs. On the HUD, show "Crystals 0 / 3" initially and update the count as the player gets within collection range; collected crystals disappear. At the end of the route on the fifth island, place a tall glowing orange-gold cylindrical beacon around (-1, y=8, z=-35), topped with a bright glowing orb. The beacon should rotate subtly and bob/glow. Reaching the beacon only wins after all three crystals have been collected. On winning, display the message "Beacon reached — sky route complete" and change the button label to "RUN AGAIN"; pressing it resets the run, player, score, and crystals.

Create a minimal dark translucent HUD over the scene. In the upper-left, show a rounded glassy card labeled "SKYBOUND RUN" with the subtitle "Leap the gaps. Reach the beacon."; in the upper-right show the crystal counter. At center show the glowing crosshair and, before starting, the text "Tap Start, then look and run". At the bottom show the help text "WASD / arrows · Shift sprint · Space jump · drag to look" and a bright cyan rounded "START RUN" button. Clicking Start Run begins the game, hides the button and start message, resets the player to the start, resets all three crystals to visible, and requests pointer lock where available. The visual style should remain clean, moody, and atmospheric: navy background/fog, soft shadows, cyan crystal and UI glow, green islands, and warm orange beacon lighting. Do not add weapons, enemies, timers, health, or additional collectibles.