Beat Drop Arena

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 mobile-first 3D rhythm-dodging game titled “Beat Drop Arena.” Use a fixed third-person perspective looking down a compact sci-fi/lunar arena from behind and above the player: the camera is centered around (0, 6.5, 11.5) and looks toward the three-lane playfield. The scene should have a warm sunset gradient sky shifting from purple at the top through coral/orange to pale peach near the horizon, soft fog, a distant peach planet with a pale ring, a coral/orange circular ground, and a stylized space-kit environment. Build three parallel glowing lanes at x=-2, 0, 2 from the foreground player toward z=-22, made from repeated square metallic platform pads with thin luminous dividers at x=-3, -1, 1, 3. Place tall sci-fi pillars at the far left and right edges (x=±4.4) at several depths, with stacked blocks, side-facing turret models, and glowing orange rings. Add distant rocket stacks, scattered rocks, and craters around the arena. Use soft shadows, bright emissive neon accents, bloom-like additive particles, and a colorful polished low-poly/cartoon style.

The player is a small astronaut character standing at the front of the lanes around z=3, with a cyan glowing circular floor marker beneath them. The astronaut smoothly slides one lane at a time between the three lanes, with a small tilt while moving, gentle bobbing, and beat-synchronized pulsing. The sole core mechanic is timed lane avoidance: hazards resolve exactly on musical beats, and the player must be in a safe lane when they arrive. Pink glowing pulse orbs fall vertically from above onto hazardous lanes. Blue/cyan glowing torus rings roll toward the player along the floor/arena depth and leave one open lane. Each hazard also has a colored floor warning ring/marker at the target lane that expands/shrinks as the beat approaches. A hazard can affect one lane, or multiple lanes; ring hazards generally block two lanes and leave a gap, while pulses may block one or more lanes. Generate deterministic charts per level with an opening center-lane teaching hazard, randomized lane paths, increasingly frequent hazards, occasional half-beat hazards, and later double/multi-lane patterns.

Timing and progression: begin each level with a four-beat count-in showing “3”, “2”, “1”, then “GO!”. Provide 10 selectable levels: First Light (78 BPM, 28 beats), Warm Up (84, 36), Drift (88, 40), Pulse Line (94, 44), Halo Rush (98, 48), Twin Beats (104, 52), Sun Storm (110, 56), Ring Cascade (116, 60), Overdrive (122, 64), and Final Drop (128, 72). Increase hazard density, ring frequency, double hazards, half-beat hazards, and speed across the levels. Each level plays original procedural generative music synchronized to the BPM: warm pads/chords, bass, soft kick, and glassy notes; include a mute toggle, and ensure visual beat pulses make the game playable muted. Beat pulses should brighten lane strips and pillar rings, enlarge the bottom beat indicator, and make the environment flash subtly.

Controls: on touch, tapping the left half of the screen moves one lane left and tapping the right half moves one lane right; clamp movement to the three lanes. Also support mouse left/right screen clicks and keyboard Left/Right arrows or A/D. Space, P, or Escape toggles pause. M toggles mute. Ignore taps/clicks on UI buttons. Add responsive mobile controls with two large circular bottom buttons labeled left and right arrows. Smoothly interpolate the astronaut to the selected lane.

Rules and feedback: start with 3 shields/lives. When a hazard lands in the player’s lane, subtract one life, reset the streak, flash a red/pink radial damage overlay, shake the camera, show “Ouch!”, play a hit sound, vibrate if available, and emit red particles. If all three shields are lost, show a “Shields Down” results screen. If the player is in a safe lane, increment dodges and streak, award 100 points times a multiplier capped at ×5, emit colored particles, play a dodge sound, and briefly shake/pulse the camera. Every 8 consecutive dodges, show “Streak 8! ×2” (and equivalent streak/multiplier text), celebrate with gold particles and a stronger sound. Completing a level shows “Level Clear!” or “Perfect Run!” based on accuracy, awards 1–3 stars (3 for at least 98% accuracy, 2 for at least 88%, otherwise 1; failed runs award none), and displays score, dodged count/total, and best streak. Persist stars locally and show a level-select total out of 30 stars. After the final level, show a “MISSION COMPLETED” screen with total stars and options for level select or replaying level 10.

HUD during play: use a translucent colorful overlay over the 3D scene. At the top-left show a home button, pause button, and “Level N · [name]”; centered near the top show the numeric score, “Streak N” plus multiplier when applicable, and three shield hearts (filled hearts become empty). Beneath this show a horizontal progress bar. In the center show the count-in text and temporary feedback popups. Near the bottom show contextual tips such as “Watch the floor rings — when they close, the pulse lands.” and the initial animated instruction “◀ Tap LEFT or RIGHT to dodge ▶”; show a glowing circular beat indicator centered between the two bottom control pads. Add buttons for home, pause, resume, restart, retry, next, help/how-to-play, and mute.

Menus and visual UI: use a dark purple translucent rounded card with a thin warm peach border and soft shadow, Fredoka-like rounded bold typography, and warm gradient buttons (orange/coral primary, blue alternate, translucent gray ghost). The title screen should visibly match the provided composition: large two-line gradient “Beat Drop Arena” heading, description “Slide between three glowing lanes. Pulses fall and rings roll in right on the beat.”, a prominent orange “Play” button, a gray “How to Play” button, top-left home icon, and top-right sound and question-mark icons. The level-select screen should contain a two-column grid of 10 rounded level buttons with level number, name, and 3-star progress. The how-to-play screen should explain tapping left/right, pink falling pulses, cyan rings and their gap, streak multipliers, three shields, stars, and keyboard controls. Include pause, results, and ending screens with the same styling. Make the layout responsive for portrait mobile and desktop, prevent page scrolling, and keep all game interaction visually and audibly synchronized to the beat.