Lake Tycoon

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 3D third-person fishing/tycoon game titled “Lake Tycoon.” Use a low-poly, softly lit stylized outdoor scene viewed with a third-person follow camera centered on a small angler. The world has a large square grassy island/ground, a circular blue lake in the middle/back area with a green shoreline ring, animated pale ripple rings on the water, scattered low-poly pine trees and bushes around the perimeter, and a wooden fishing dock extending from the near shore into the lake. The dock is made from several parallel brown planks with support posts.

The player is a simple orange/tan capsule-like angler with a red circular hat and a brown fishing rod with a small metallic reel. Start the player near the landward end of the dock. Move with WASD or arrow keys using third-person character controls. The core loop is: walk onto the dock near the lake, press Space to cast, wait for a bite, then press Space again when prompted to reel in. Casting is only allowed while the player is on/near the dock (x within roughly 3.5 units and z greater than 5.2); otherwise show a toast message such as “Walk onto the dock to fish.” When cast, show a red bobber and a circular cast ripple on the lake and display “Line cast... wait for a bite.” After a randomized wait of about 2.5–4.7 seconds, make the bobber indicate a bite, show a small animated golden fish at the bobber, and display “BITE! Press Space to reel in!” Pressing Space during the bite catches the fish, hides the bobber/fish/ripple, awards money, and displays “Fish landed! +value.” Pressing Space too early while waiting should display “Not yet — wait for the bobber to splash.”

Use these exact progression rules: start with 35 coins, 0 fish sold, rod level 1, revenue $0, and no fish stall. Each caught fish at rod level 1 is worth 12 + 7 × rod level dollars (so 
9 initially), rounded after applying any multiplier. Increase rod level by buying an upgrade from the HUD for rodLevel × $45; this subtracts the cost and increments the rod level. A fish stall can be built once for $90; after purchase, subtract $90 and apply a 25% sale-value multiplier to all future fish. Keep the stall purchase and rod upgrade buttons disabled when unaffordable, and mark the stall as built after purchase.

Add a fixed HTML-style HUD over the 3D view. In the upper-left, use a dark translucent rounded panel titled “Lake Tycoon” showing Coins, Fish sold, Rod level, and Revenue. In the upper-right, use another dark translucent rounded panel titled “Fishing business,” showing the current rod power/level and either “Build a stall for $90” or “Fish stall active: +25% sale value,” plus full-width buttons labeled dynamically “Upgrade rod ($45)” initially and “Build fish stall ($90)” initially. Put a centered bottom dark rounded hint panel reading “WASD / arrows to move · Space to cast · walk to the dock and face the lake.” Use brief centered toast notifications for fishing and purchase feedback. Match the visual style in the reference: cyan/light blue sky background with fog, bright soft sunlight and shadows, simple colorful low-poly geometry, dark glassy navy HUD panels, white text, and blue action buttons. Ensure the lake ripples subtly pulse over time and the fish bobs/rotates during a bite.