Halfpipe Hero

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 “Halfpipe Hero,” a simple 3D arcade skateboarding game focused on repeatedly riding a halfpipe, pumping for speed, popping into the air, performing tricks, and landing back on the ramp for points. Use a fixed, slightly elevated front-facing perspective that shows the entire width of one broad U-shaped halfpipe, with only subtle horizontal camera follow as the skater travels. The ramp is a smooth gray-blue concrete U profile, low in the center and rising steeply at both sides, with faint transverse surface seams, thin metallic coping rails along both outside lips, dark deck-edge beams, and a few simple steel support posts. Place it in an uncluttered outdoor skate park: flat muted teal-gray ground, a hazy pale blue sky/background and soft shadows. Use clean, low-poly/stylized 3D art and soft directional lighting.

The only character is a small cartoon skater on a skateboard: yellow helmet, warm-toned face, red-orange hoodie, dark navy pants, light shoes, and a board. The skater continuously rolls along the curved halfpipe under gravity. On the ramp, slope naturally accelerates the skater downhill and slows them climbing uphill; holding left or right pumping adds directional acceleration, allowing the player to build and steer speed. At a lip, the skater leaves the ramp and becomes airborne. Press POP / OLLIE while grounded to jump; while airborne, choose FLIP, 360°, or GRAB to attempt a trick. Tricks can only be started in the air. Award trick bonuses (flip, spin, and grab have distinct bonus weights), then add points for airtime and rotations when the player descends and lands back on the pipe. A clean landing ends the current attempt and displays a brief large points/landing message with the trick name and airtime when applicable. Keep accumulating score and save/display a persistent best score. There are no enemies, obstacles, lives, levels, or other objectives.

HUD overlays the 3D view. At upper left show the small widely letter-spaced uppercase title “HALFPIPE HERO”; at upper right show two dark translucent rounded panels labeled SCORE and BEST with large numeric values. Center a short instruction line near the top: “PUMP LEFT / RIGHT · POP OFF THE LIP · LAND CLEAN”. Show a temporary centered “AIR TIME” indicator while airborne, and show brief large white score/landing feedback around the upper-middle of the screen after a scored landing. Along the bottom, provide large rounded dark touch buttons: left and right arrow buttons both labeled PUMP on the lower left; on the lower right, a prominent POP / OLLIE button followed by smaller FLIP, 360°, and GRAB buttons. Buttons briefly highlight orange while activated. Support keyboard controls as well: left/right arrows or A/D to pump, Space or Up Arrow to ollie, and 1/2/3 for flip/spin/grab. Keep the entire scene and HUD visible, readable, and responsive across desktop and mobile screen sizes.