Turn one small game idea into a playable browser prototype before investing in a larger build. AI-assisted production by Jaco Taute. Included: one single-player game with one agreed core mechanic; simple original graphics; keyboard and on-screen controls; scoring, restart and a local high score where suitable. Delivery includes self-contained HTML/CSS/JavaScript source, a short README, functional browser checks and one round of corrections within the agreed scope. Message me with the mechanic, intended audience, visual direction and any supplied assets. Quoted in USD after reviewing your mechanic, intended audience, visual direction and any supplied assets. Scope, price, acceptance checks and the final delivery date must be agreed before booking or work begins. The displayed one-week duration is indicative only, subject to reviewing scope and materials. This listing is a nonbinding invitation to discuss a project. Example: Parcel Sprint is my self-produced, AI-assisted original prototype, not paid-client work. Play it at https://parcel-sprint-r0.yellow-lamp-2023.chatgpt.site/ and see the linked case study for screenshots and test details. It demonstrates prototype functionality; no human-player validation, customer demand, revenue or commercial outcome is claimed or guaranteed. Not included: backend, accounts, multiplayer, payments, ads, tracking, external paid APIs, copied characters, store submission or Steam-ready delivery. No financial or medical calculators or regulated decisions. Clients must have rights to any supplied branding and assets. Device-specific, sound and accessibility requirements need separate scope review.