Startup Street

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 playable browser game titled “Startup Street,” a 2.5D/isometric idle business tycoon. Show an orthographic Three.js-style isometric camera looking down at a small commercial lot: a bright mint-green rectangular grassy plot, a dark gray road along the front edge with a pale sidewalk, four simple cone-shaped green trees with brown trunks, and several muted blue-gray rectangular office buildings in the distant background. In the center, display a storefront/business building that upgrades visually based on valuation, using distinct commercial-building silhouettes for four stages: Garage Startup at the beginning, Shop at 
5,000 valuation, Office at $90,000, and HQ Tower at $350,000. Use a clean low-poly/cartoon city aesthetic with soft shadows, pastel sky-blue background/fog, and bright daylight. Add a floating sign attached to the central building with a colored gradient and stage-specific text: “GARAGE STARTUP,” “STARTUP STREET,” “STARTUP STREET INC,” or “STARTUP STREET HQ,” plus a small line showing the counts of businesses, staff, and investors. Once the company leaves the garage stage, hired staff become visible around the lot as small stylized people with colored bodies, heads, and desks; investor visitors can appear as small suited people carrying gold briefcases with gold halos.

The core loop is idle accumulation: start with $75 cash, one dollar per second income, zero businesses, staff, upgrades, and investors. Income continuously accumulates into an uncollected profit pile rather than directly into cash. Provide a large “Collect Profits” button that transfers the whole integer profit pile into cash. Display rotating/floating gold coin objects near the business whenever more than $3 is waiting, and animate them gently. Cash is spent through touch/mouse buttons: “Buy Business,” initially costing 
20 and adding +$6/s, with the price increasing by 1.55x per business; “Hire Staff,” initially costing $90 and adding +$3.5/s, with the price increasing by 1.42x per staff member; and “Upgrade Income,” initially costing 
10 and multiplying income by 1.34, with the price increasing by 1.65x per upgrade. Disable purchase buttons when the player lacks cash and show a brief toast message for purchases, insufficient funds, and other outcomes. Income should be calculated from base income 1 + 6 per business + 3.5 per staff, multiplied by 1.34 for each upgrade and 1.18 for each investor, with any challenge bonus applied.

Add a fifth bottom action called “Pitch Investors.” It is disabled until the valuation reaches a threshold of 
5,000, multiplied by 3.15 for each previous investor. When available, it grants cash equal to 1.2 times that threshold plus 90 seconds of current income, increases the investor count by one, and permanently gives +18% income through the investor multiplier. Update the visible investor visitors, sign, and HUD when this happens. The valuation should combine banked cash, uncollected profits, income rate times 520, businesses times 1,400, staff times 650, upgrades times 2,100, and investors times 12,000. The main goal is to reach a 
,000,000 valuation; show a progress bar toward this goal, mark the goal as won when reached, but let normal play continue indefinitely afterward.

Build a translucent, rounded, mobile-friendly HUD over the scene. At the top show cards for CASH, INCOME (per second), VALUATION, INVESTORS, and STAGE, with dark navy bold text and pale blue-white panels. Show a goal panel reading “Goal: reach 
,000,000 valuation” with a cyan/green progress bar. Along the bottom, arrange the five large rounded action buttons in a responsive grid: yellow/orange “Collect Profits,” then white/pale-blue “Buy Business,” “Hire Staff,” “Upgrade Income,” and “Pitch Investors,” each with a smaller live cost, bonus, or waiting amount. Use pointer/touch controls only; no keyboard controls, combat, enemies, or normal game-over state.

Occasionally generate an optional “Flash Opportunity” challenge while play continues. It should appear as a prominent translucent white card near the upper-right on desktop and adapt across the screen on mobile, with a countdown starting around 22 seconds, text such as “A client offers a rush deal worth 
50. Optional — miss it and you only lose the opportunity,” and a blue “Take Deal” button. The reward should be the greater of 
50 or roughly 55 seconds of current income. Accepting immediately adds the reward to cash and banked cash. If it expires, increment a missed-opportunities counter and continue normal play without penalty; if no opportunities have been missed, successful deals can increase a challenge income bonus by 0.03 up to 1.5x. Use short dark toast notifications for collected cash, purchases, investor rounds, accepted deals, expired opportunities, and reaching the goal.

Persist the game in localStorage with a save timestamp. On reload, calculate offline earnings for up to 72 hours at 45% of the current income rate and place that amount into the uncollected pile. If the amount is meaningful, show a centered “Welcome back” modal explaining the offline earnings and a green “Collect Offline Earnings” button that dismisses it. Save periodically and on page exit. Keep the presentation soft, polished, and highly readable: white translucent glass panels with rounded corners and shadows, Inter-like bold sans-serif typography, blue-gray text, yellow collect action, bright blue challenge action, and no debug UI.