Travel Milk Frog (旅行奶蛙) — Every Trip Comes Home With a Postcard | Neta Studio
Play Travel Milk Frog (旅行奶蛙), a free browser pixel-cabin collecting game where you harvest money grass, pack the butter-yellow milk-frog mascot a bag and send it out to bring back 94 milk-frog reworkings of real world masterpieces across 16 galleries — plus letters and travel postcards for the wall. No install, no signup, no ads. Built and published in Neta Studio.
Final Product: Travel Milk Frog (旅行奶蛙)
Cover
The page key art, generated 16:9 with GPT Image 2 in the world’s own palette: the canonical butter-yellow milk frog in a felt hat and travel satchel stands on the pixel-meadow path beside its red-roofed cabin, while milk-frog postcards of the Mona Lisa, The Great Wave, The Starry Night and a Van Gogh self-portrait are pinned around it on an aged cream museum-poster ground with thin gold hairlines.
Screenshot
The real game, opening view. The travel corner renders a 320×180 pixel cabin scene — red roof, picket fence, hollyhocks and a sandy path — with a live stat bar (24 money grass, 0/94 collected, 0 letters, 0 trips) and the five tabs 旅行角 · 信箱 · 明信片墙 · 图鉴 · 记录. The caption under the meadow reads “点草地上的钱草收一收 · 按住扫过收更多” — tap the money grass, or press and sweep to harvest more.
Screenshot
What one trip actually returns. After choosing an interest item, a supply and a trip length, the frog walks out and comes back: “回来了 · 带回了 1 件馆藏” heads a modal that stacks a catalogued work (a milk-frog reworking of Delacroix’s Liberty Leading the People, tagged 珍品 and linking straight to the museum), the handwritten letter it wrote home — “动物朋友 · 走了 30 分钟，进了 1 间屋子，在一幅画面前站了很久。” — a labelled travel postcard for the wall, and the running log.
Travel Milk Frog (旅行奶蛙) is a free browser pixel-cabin collecting game generated by Neta Studio inside the milk-frog museum world. You keep a sunny low-resolution cottage, harvest money grass from the meadow, then pack the milk-frog mascot a bag: one interest item that steers which eras it gravitates to, one single-use supply, and a trip length. Send it out and wait — while it is away it walks real galleries and comes home with a milk-frog reworking of a famous painting, a letter in its own voice and a few travel photographs that go straight up on the postcard wall, all filed into an album that fills toward 94 works across 16 galleries.
It is one static pixel-art web app: no install, no account, no ads and no purchases. Everything is drawn at the game’s native 320×180 pixel resolution and integer-scaled, so the whole thing loads in about a second on any device. The frog’s collection overlaps the other milk-frog sets — the museum, the card pack and the stamp album — but the framing, the route and the rarities are its own.
Play it now: Travel Milk Frog →
Features
- Collect 94 Real Masterpieces — The catalogue holds 94 milk-frog reworkings of real paintings, spanning 16 galleries from prehistory and Qin–Han China through the Renaissance, Romanticism, Ukiyo-e, Impressionism and Modernism. Every collected card names the original work and artist and links straight to the museum entry — so the collection you build is a real art-history syllabus, not filler.
- A Postcard Wall That Fills Up — Every trip the frog takes brings back travel photos, and each one goes up on the cottage’s 明信片墙. Leaf through them one at a time: each postcard carries two layers — a milk frog inside a real masterpiece, plus a short note from the road such as “This painting is bigger than I expected. You have to look up to see all of it.”
- Letters in the Frog’s Own Voice — Trips do not just produce art. The 信箱 fills with first-person letters that say how long it walked and how many rooms it entered, and the 图鉴 and 记录 tabs keep the full album and a running log of every outing — so the world accumulates a diary as well as a collection.
- Pack a Trip in Three Choices — Each journey is three picks: one of five interest items (a folding map, an oil brush, a ukiyo-e block, a telescope or a small camera) that decides which eras you are most likely to meet, one of five single-use supplies (rice ball, dried fish, picnic box, milk tablet or blank postcard) and one of four trip lengths. The combinations change both the loot and the story you get back.
- Money Grass, Not Microtransactions — The only currency is money grass growing in front of the cabin: tap a clump to collect it, or press and sweep across the meadow to gather far more at once. It pays for interest items, supplies and longer trips. There are no ads, no in-app purchases and no energy timers to pay away.
- Time Really Passes in a 320×180 Cabin — A first stroll is free and takes 30 minutes; a short walk is 2 hours, a long expedition half a day and a half-day ramble a full day, with the ramble unlocking only after 12 pieces. Trips run on real clocks and longer trips return more, rarer works. The whole scene is baked and animated at a native 320×180 pixel buffer and integer-scaled, so the sky gradient, drifting clouds, hill layers, fence, hollyhocks and the frog’s walk cycle stay sharp on any screen.
Interface
UI
The travel corner (旅行角) is the game’s home: the live pixel scene sits above a stat bar tracking money grass, collection progress (0 of 94), unread letters and trips taken, with the five tabs 旅行角 · 信箱 · 明信片墙 · 图鉴 · 记录 underneath and the harvest hint pinned to the meadow’s edge.
UI
The trip planner is three numbered steps in one column: ① 挑一件兴趣物 (choose an interest item), ② 塞一份补给 (pack one supply) with the five options and their money-grass prices — 普通饭团 6, 小鱼干 8, 野餐盒 14, 奶片 10, 空白明信片 7 — and ③ 选好时长 (choose a duration) with the first stroll free and the half-day ramble locked until 12 collected. The live cost and your balance sit right below the last row.
UI
The return screen is the payoff: “回来了 · 带回了 1 件馆藏” heads a modal that stacks the collected masterpiece card (tagged 珍品 and linking to the museum), the letter the frog wrote home, the labelled travel photo for the postcard wall and the running log, with a 收下，继续 button to file everything away.
Production Process Breakdown
Stage 1: World and Character Designclaude-opus-5
The world begins from a single line — “I want to build a milk-frog museum site that exhibits world-famous paintings and artworks reworked with milk frogs; the UI and layout should reference breguet.com, very high-end.” From that, the canon is locked: one official Milk Frog character atom fixes the pear-shaped body that flows into the torso with no neck, the large pale-cream belly, exactly two pale-green eye rings each holding a flat black pupil at 45% of the ring’s diameter, one tiny straight mouth line and short taupe mitten hands. Travel Milk Frog keeps that identity untouched and re-frames it as a cosy pixel-cabin collecting loop instead of a museum page.
The world begins from a single line — “I want to build a milk-frog museum site that exhibits world-famous paintings and artworks reworked with milk frogs; the UI and layout should reference breguet.com, very high-end.” From that, the canon is locked: one official Milk Frog character atom fixes the pear-shaped body that flows into the torso with no neck, the large pale-cream belly, exactly two pale-green eye rings each holding a flat black pupil at 45% of the ring’s diameter, one tiny straight mouth line and short taupe mitten hands. Travel Milk Frog keeps that identity untouched and re-frames it as a cosy pixel-cabin collecting loop instead of a museum page.
Stage 2: Asset Direction and Generationgpt-image-2birefnet-general
Art direction is fixed before anything is drawn: warm museum-poster cream, thin gold hairlines, flat matte colour and generous negative space. The 94 painting adaptations and the official Milk Frog reference sheets are generated with GPT Image 2, the 16:9 key-art cover is generated from the same identity lock, and the character art is cut to transparent PNG sprites with BiRefNet. The game scene itself is drawn in code at a 320×180 pixel buffer so it stays crisp when integer-scaled.
Art direction is fixed before anything is drawn: warm museum-poster cream, thin gold hairlines, flat matte colour and generous negative space. The 94 painting adaptations and the official Milk Frog reference sheets are generated with GPT Image 2, the 16:9 key-art cover is generated from the same identity lock, and the character art is cut to transparent PNG sprites with BiRefNet. The game scene itself is drawn in code at a 320×180 pixel buffer so it stays crisp when integer-scaled.
Stage 3: Build, QA and Publishdeepseek-v4-flash
The game ships as a small static web app — one HTML document, one stylesheet and a handful of scripts driving a canvas pixel engine with per-element animation phases — so it loads instantly and needs no backend. QA opens it in a real browser, sweeps the money-grass meadow, runs every interest item, supply and trip length through a full loop, checks that each collected card links to the right museum original, and then publishes the finished work to a shareable browser URL.
The game ships as a small static web app — one HTML document, one stylesheet and a handful of scripts driving a canvas pixel engine with per-element animation phases — so it loads instantly and needs no backend. QA opens it in a real browser, sweeps the money-grass meadow, runs every interest item, supply and trip length through a full loop, checks that each collected card links to the right museum original, and then publishes the finished work to a shareable browser URL.
Asset Prompts
Real Generation Prompts
Official Juvenile Milk Frog Reference Sheet Promptgpt-image-2
“Create a strict official juvenile Milk Frog reference sheet, using the two supplied juvenile reference images. Show exactly three full-body standard views in one row on pure white: left pose, center pose, right pose. All three heads and faces must point straight toward the viewer, with both eyes fully visible in every view. The black pupil of each eye must be a small solid circle exactly at the geometric center of its pale-green eye ring, with equal green margin around it. Preserve the official juvenile identity: smaller compact rounded yellow body, pale cream belly when visible, continuous head and torso without neck, short rounded limbs, small dark olive-brown hands and feet, two pale-green eye rings, centered black pupils, tiny horizontal mouth, soft matte 3D surface. No realistic frog, green skin, nose, nostrils, webbed feet, long toes, text, labels, grid, border, watermark, props, adult proportions, extra characters, or altered identity.”
“Create a strict official juvenile Milk Frog reference sheet, using the two supplied juvenile reference images. Show exactly three full-body standard views in one row on pure white: left pose, center pose, right pose. All three heads and faces must point straight toward the viewer, with both eyes fully visible in every view. The black pupil of each eye must be a small solid circle exactly at the geometric center of its pale-green eye ring, with equal green margin around it. Preserve the official juvenile identity: smaller compact rounded yellow body, pale cream belly when visible, continuous head and torso without neck, short rounded limbs, small dark olive-brown hands and feet, two pale-green eye rings, centered black pupils, tiny horizontal mouth, soft matte 3D surface. No realistic frog, green skin, nose, nostrils, webbed feet, long toes, text, labels, grid, border, watermark, props, adult proportions, extra characters, or altered identity.”
Official Mature Milk Frog Reference Sheet Promptgpt-image-2
“Create a strict official mature Milk Frog reference sheet… Preserve the official mature Milk Frog identity: warm yellow-orange pear-shaped body, pale cream belly, continuous head and torso without neck, short rounded arms, dark olive-brown hands and feet, two pale-green eye rings, centered black pupils, tiny horizontal mouth, soft matte 3D surface. No realistic frog, green skin, nose, nostrils, webbed feet, long toes, text, labels, grid, border, watermark, props, extra characters, or altered identity.”
“Create a strict official mature Milk Frog reference sheet… Preserve the official mature Milk Frog identity: warm yellow-orange pear-shaped body, pale cream belly, continuous head and torso without neck, short rounded arms, dark olive-brown hands and feet, two pale-green eye rings, centered black pupils, tiny horizontal mouth, soft matte 3D surface. No realistic frog, green skin, nose, nostrils, webbed feet, long toes, text, labels, grid, border, watermark, props, extra characters, or altered identity.”
Mona Lisa as a Milk-Frog Oil Painting Promptgpt-image-2
“Reimagine Leonardo da Vinci’s Mona Lisa as an oil painting, but the sitter is the round butter-yellow milk-frog character from the reference (soft plump body, cream-colored belly, calm green eyes, gentle closed-mouth smile). The frog sits in the exact three-quarter Mona Lisa pose, hands folded, before the hazy Renaissance mountain landscape with winding river. Sfumato technique, cracked aged varnish, dark museum-oil palette, golden-brown tones. Faithful to the original composition and lighting. No text.”
“Reimagine Leonardo da Vinci’s Mona Lisa as an oil painting, but the sitter is the round butter-yellow milk-frog character from the reference (soft plump body, cream-colored belly, calm green eyes, gentle closed-mouth smile). The frog sits in the exact three-quarter Mona Lisa pose, hands folded, before the hazy Renaissance mountain landscape with winding river. Sfumato technique, cracked aged varnish, dark museum-oil palette, golden-brown tones. Faithful to the original composition and lighting. No text.”
Vermeer’s The Milkmaid as a Milk-Frog Painting Promptgpt-image-2
“Reimagine Vermeer’s The Milkmaid. A sturdy milk-frog in a linen cap, yellow apron and blue skirt stands at a table pouring a thin stream of milk from an earthenware jug into a bowl, cream belly rounded, calm eyes down at its work. Soft daylight from a left window, bread and crockery on the table, plaster wall, quiet Dutch domestic oil realism. The plump frog IS the entire figure, repainted completely in the target masterpiece style so it dissolves into the original brushwork, texture and palette. No text, no signature, no watermark, no border captions.”
“Reimagine Vermeer’s The Milkmaid. A sturdy milk-frog in a linen cap, yellow apron and blue skirt stands at a table pouring a thin stream of milk from an earthenware jug into a bowl, cream belly rounded, calm eyes down at its work. Soft daylight from a left window, bread and crockery on the table, plaster wall, quiet Dutch domestic oil realism. The plump frog IS the entire figure, repainted completely in the target masterpiece style so it dissolves into the original brushwork, texture and palette. No text, no signature, no watermark, no border captions.”
Constable’s The Hay Wain Adaptation Promptgpt-image-2
“Create artwork only: a faithful historical adaptation of John Constable’s The Hay Wain, 1821, English Romantic landscape… Use the attached original painting as the absolute authority for composition, crop, wagon, horses, cottage, river, sky and brushwork… the large wooden hay wagon standing in the shallow river, drawn by the dark horses, the weathered brick cottage at left beneath the two great oaks… substitute the rider and the worker with the canonical milk-frog character, keeping the original palette, light and visible brushwork.”
“Create artwork only: a faithful historical adaptation of John Constable’s The Hay Wain, 1821, English Romantic landscape… Use the attached original painting as the absolute authority for composition, crop, wagon, horses, cottage, river, sky and brushwork… the large wooden hay wagon standing in the shallow river, drawn by the dark horses, the weathered brick cottage at left beneath the two great oaks… substitute the rider and the worker with the canonical milk-frog character, keeping the original palette, light and visible brushwork.”
Delacroix’s Liberty Leading the People Adaptation Promptgpt-image-2
“Museum-quality romantic oil painting faithfully following the composition of Delacroix’s famous 1830 Paris revolution scene… the central allegorical leader stepping over the rubble becomes the cartoon creature in its mature form — a rounded warm muted yellow pear-shaped body continuous from head to torso with no neck, large pale cream belly, short thick blunt limbs, compact dark taupe broad hands and feet — wearing the same red Phrygian cap, the same red-white-blue sash… All other figures remain ordinary period humans. Romantic oil painting, loose visible brushwork, warm smoky browns and grays, dramatic hazy lighting. No photorealism, no digital gradients, no 3D, no modern mascot finish.”
“Museum-quality romantic oil painting faithfully following the composition of Delacroix’s famous 1830 Paris revolution scene… the central allegorical leader stepping over the rubble becomes the cartoon creature in its mature form — a rounded warm muted yellow pear-shaped body continuous from head to torso with no neck, large pale cream belly, short thick blunt limbs, compact dark taupe broad hands and feet — wearing the same red Phrygian cap, the same red-white-blue sash… All other figures remain ordinary period humans. Romantic oil painting, loose visible brushwork, warm smoky browns and grays, dramatic hazy lighting. No photorealism, no digital gradients, no 3D, no modern mascot finish.”
Why Choose Neta Studio
Professional — The cloud harness supports the full pipeline from world building to a finished, shareable interactive game, all running in the cloud with no local setup and stable access to the latest models: Claude Opus 5, GPT Image 2, BiRefNet and DeepSeek V4.
One-click generation — Officially tuned skills drive every step: world building, character design, art generation, pixel-art layout and publishing. World forking lets you inherit characters, locations and rules from any public world, then rewrite the parts you want.
Community-first — Users build unlimited worlds, and every public world can be forked, remixed and reimagined. The Discord learning community provides tutorials and real-time support — from your first world to your first playable game.
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Play It Now
This game was generated by Neta Studio AI inside the milk-frog museum world from a single seed prompt. The world took minutes. The game took minutes. You can do it too — fork this world or start fresh from any idea. No coding required, free to start.
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