Skybound Sprint

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 2D side-scrolling platformer titled “Skybound Sprint,” rendered on an HTML canvas with a bright, friendly arcade presentation. The game is viewed from a side-on perspective and follows a small green cartoon duck player running through a long sky-level course. Use a 4200-unit-wide level with a horizontally following camera: the camera smoothly tracks the player toward the left-center while the world scrolls.

Visual style: use a vivid cyan-blue sky, layered white/pale-blue cloud artwork across the upper background with subtle parallax, and rolling green hills along the lower background. Platforms are chunky rectangular brown dirt blocks with a bright lime-green grass strip on top and small darker square dirt details. Use cartoon sprite artwork for the green duck hero, gold coin, purple slime enemy, and cloud background. Keep the overall look clean, colorful, and approachable, with large bold dark navy HUD text and translucent white rounded HUD panels.

Level layout: provide wide ground platforms separated by pits: approximately x=0–620, 720–1260, 1360–1980, 2080–2800, and 2910–4200. Add elevated grass-topped dirt platforms at these approximate world positions and heights above the ground: (260,150,width 180), (560,245,width 170), (850,135,width 180), (1100,245,width 180), (1450,165,width 200), (1760,280,width 180), (2050,150,width 190), (2370,260,width 190), (2700,145,width 180), (3040,230,width 210), (3390,130,width 180), and (3710,250,width 200). The player begins near x=120 on the first ground section. Place gold coins in collectible arcs and above platforms, approximately at (320,205), (620,300), (900,190), (1170,300), (1510,220), (1820,335), (2120,205), (2440,315), (2770,200), (3120,285), (3470,185), (3800,305), plus higher bonus coins around (470,90), (1030,80), (2200,75), and (3300,75). Coins bob gently up and down and disappear when collected.

Add six purple slime enemies initially on ground sections around x=470, 930, 1570, 2240, 3100, and 3550. They patrol horizontally, reversing direction at bounds. Collision with a slime costs a life and respawns the duck at the starting point; however, if the duck lands on an enemy from above, defeat the slime, bounce the player upward, and award two points/coins. Falling into a pit also costs a life and respawns the player. Start with 3 lives and a score of 0; reset all coins and enemies when restarting.

Player physics and controls: the duck can move left/right with A/D or the left/right arrow keys, accelerates smoothly up to a capped horizontal speed, decelerates when no direction is held, and faces the direction of travel. Press Space, W, or Up Arrow to jump; jumping is allowed only while grounded. Use gravity and solid one-way landing behavior so the player can land on top of ground and elevated platforms. Clamp the player within the level’s horizontal bounds. Reaching the far right end of the level (roughly x>4020) wins.

HUD and interaction: pin a top-left rounded translucent white panel reading “SKYBOUND SPRINT” with the hint “A/D or ←/→ • Space to jump” beneath it. Pin a matching top-right panel showing “COINS [score] | LIVES [lives]” and update it continuously. On screens narrower than desktop, show large translucent circular left and right arrow buttons at the bottom-left and a rounded rectangular “JUMP” button at bottom-right; these buttons should support pointer/touch input and mirror keyboard controls. Hide touch controls on wider desktop screens. Display large centered navy status text near the upper portion of the play area: briefly show “TRY AGAIN” after losing a life, “GAME OVER • press R to restart” when all lives are gone, and “LEVEL CLEAR! • press R to replay” after reaching the goal. While game-over or won, pause gameplay until R is pressed. Include a small star marker near the far-right end to signal the finish. Ensure the game is playable immediately and supports responsive resizing while preserving the bright sky platformer composition.