Instant travel speed for the lift lift.y = 0; lift.speed = 30; Allow up to 100 workers on the first floor shafts[0].max_workers = 100; Allow up to 10 workers per shaft for (let i = 1; i < max_shafts; i++) shafts[i].max_workers = 10; Despawn all workers shafts.forEach((shaft) => { shaft.workers = []; }); Accelerate the game x10 (this might be more power hungry) Array.from(Array(10)).forEach(() => animate()); Get paid $10 for hiring a worker (you pay $5 and receive $10) shafts.forEach((shaft) => shaft.workers.push = function () { score += 10; return Array.prototype.push.apply(this, arguments); }); Cool game OP :)