Anti Gravity (Bill Gravity Drop)
"2D Physics Pinball Drop & Suspend Arcade Game"
Bill Gravity Drop
3D glass spheres bounce through physical pin obstacles. The first orb into the red pay zone pays the check!
Anti Gravity (Bill Gravity) is an interactive 2D physics simulation pinball drop game. Player names are converted into color-coded 2D spheres that drop through a multi-tier pin obstacle field. Built on HTML5 Canvas vector dynamics, gravity parameters, and elastic collisions, Anti Gravity delivers an unbiased, physics-simulated result as spheres deflect off pegs until the first orb lands in the designated Check Payer Zone. Enter the names of your table diners or generate a shared 4-letter room code to sync player rosters seamlessly across mobile devices without needing app downloads or user account registration.
2D Canvas Physics Engine & Algorithm Mechanics
Anti Gravity runs a real-time 2D rigid-body collision simulator rendered directly on an HTML5 Canvas viewport. Each diner’s sphere is initialized with random velocity perturbations (vx in [-1.5, 1.5] px/frame) and acceleration vectors (gravity = 0.35 px/frame^2).
- Peg Obstacle Lattice: 7 offset rows of circular pins with coefficient of restitution (e = 0.75) cause momentum deflection angles on collision.
- Cryptographic Unbiased Initial Coordinates: Sphere drop offsets use browser-based random seeds so every table participant maintains an identical 1/N probability.
- Check Payer Zone: The first sphere whose center coordinate passes below the bottom threshold (Y > height - 70px) is declared the check payer, stopping frame updates.
How does the Anti Gravity (Bill Gravity) 2D physics engine work?
Anti Gravity converts each diner’s name into a physical sphere rendered on an HTML5 Canvas canvas. When you start the drop, 2D gravity physics calculates velocity vectors, pin surface normal deflections, and elastic coefficient bounces (e = 0.75) as spheres navigate through 7 offset peg rows. The first sphere to pass into the bottom danger tray selects tonight’s check payer.
Is Anti Gravity fair and unbiased for all table diners?
Yes. Anti Gravity uses cryptographic client-side seed generation for initial horizontal drop coordinates and subtle velocity perturbations, ensuring every participant at the table has an identical mathematical probability of winning or being selected.
Can dining groups play Anti Gravity on mobile devices?
Yes. Anti Gravity is fully optimized for single-hand mobile touchscreens. Table diners can also enter a shared 4-letter room code (e.g. TOSS) so everyone’s phone automatically syncs player names.
Is Anti Gravity a gambling game?
No. Anti Gravity is a 100% free entertainment and decision-making utility. It contains zero wagering, zero entry fees, zero cash prizes, and zero real-money transactions. It is designed solely to settle friendly dining check decisions.