Ball Fall

Build a small, playable browser game inspired by "Ball Fall" (genre not listed).
Concept: A fast, chaotic multiplayer survival showdown where you roll, dodge, and outlast your rivals on collapsing tiles until someone takes the plunge.
Tone/hook (from the game's own page): Roll through a collapsing neon arena, stack multipliers, and outlast the void in Ball Fall.
Tech: use plain HTML, CSS and JavaScript (or a lightweight engine you know); keep it to a single page that loads instantly with no login or install.
Controls (as seen on the original's screen): WASD to move, arrow keys, mouse to aim or look, an on-screen joystick on mobile, tilt controls on phone, tap on mobile, gamepad support. Show them on a short how-to-play screen.
Players: start single-player (the original's player count is not stated in its listing).
Core loop: include a visible score, a timer or round clock, an optional local high-score table.
Steps: 1) get the core mechanic playable with placeholder shapes, 2) add win/lose conditions and restart, 3) polish feel, visuals and sound, 4) add your own twist (setting, character or one new rule).
Make it your own: don't copy the original's name, art, text or code.