Edgy Fox
Free · play online in your browser, no download
The whole level is the edge of your screen: the fox runs around it by itself, and you only jump or stop. Two months with Claude Code, in a hard and an easy version.
Official site svitsgames.itch.io, verified Nov 3, 2026. Linked as the original version from the developer's own Reddit post on r/aigamedev; the itch.io credits read “Made by SvitsGames”.
Where to play
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- Play free — itch.ioitch.ioReleased · The original, harder version (no ads)Free
Plays in the browser on itch.io. No download.
Browser (no download) · Mobile · Official link verified Nov 3, 2026.
- Play free — official siteBrowserReleased · The easier version, on Playgama's sandboxFree
Runs in a desktop or mobile browser. No download.
Browser (no download) · Mobile · Official link verified Nov 3, 2026.
About Edgy Fox
Edgy Fox is a free pixel-art arcade game for the browser. The fox runs around the edge of the screen by itself, and you get two moves: tap to jump and hold to stop. Boars and deer bounce around the middle, hares race along your path, birds swoop down onto it and boars throw fruit that lands in red warning circles, so you jump what runs along your wall and stop for what dives at you; your score is the number of laps you survive. A run goes through spring, summer, autumn and winter, each with its own animals and a different boss ten laps in, which you dodge or hit by running over the glowing part of the path. Beat winter's boss and a new year starts, harder and with a twist of its own. Between runs, coins buy upgrades, fox colours, trails and animal friends, and there are missions, trophies, a daily reward, a nature journal, Boss Rush and a Zen mode with a timer and no game over; nothing you buy makes the fox faster or jump higher. It plays on a phone or a computer, in portrait or landscape, with touch, mouse, keyboard or gamepad. There are two versions: the original, harder one on itch.io with no ads, and an easier one with ads on Playgama, eased after the developer read the player data there. The developer, SvitsGames, a web developer with more than 15 years of experience, says they spent about two months building it with Claude Code, which “did most of the typing” (about 530 of some 600 commits are co-authored by it), while the developer designed the game, wrote the rules Claude works by, reviewed its changes and played every build. The art, sounds, music and font are ready-made packs, not AI-generated.
How it was built
Partially verifiedIn a post on r/aigamedev (26 Oct 2026, UTC) the developer writes: “I've spent about two months building Edgy Fox with Claude Code.” The split, per the post: the developer came up with the gameplay, made the design calls, wrote the rules Claude works by, reviewed its changes and played every build on a phone, a PC and with a gamepad; “Claude did most of the typing: about 530 of the ~600 commits are co-authored by it. I do, however, understand every line of code”, and later “I have to review what it writes (ok, let's be honest, maybe not every line, but at least every function or logical part)”. The models were Claude Opus 5 and then Opus 5.5 in the main session and Sonnet 5.5 for two subagents (one writes code from an agreed plan, the other checks a build against the portal's requirements), plus two skills for releases and difficulty passes. Decisions live in a short CLAUDE.md plus 15 rule files that load only when Claude opens a file they cover, each with a date and a reason; Claude runs 610 checks of the game logic in Node after every change and must back every claim with a file and line or a command's output. Through Playgama's MCP server Claude uploads builds, sets up leaderboards and reads the player telemetry, which drove most updates since launch. Claude also wrote the Python asset-pipeline script and handles merges between the two versions.
- DeveloperThe itch.io AI disclosure ticks AI Assisted and Code only. — itch.io
Phaser 4.1 with TypeScript and Vite. The game's rules are plain TypeScript kept apart from Phaser, so 610 checks run the real game code in Node in a few seconds; balance bots built on Playwright play the real game in headless Chromium, reacting 220 to 380 ms late with sloppy taps to imitate a thumb on a phone, plus a WebKit smoke test for Safari-like browsers. A Python asset pipeline with Pillow and ffmpeg cuts, recolours and compresses the art and audio; the fox's 22 colours are recolours of one sprite sheet. The art, sounds and music are ready-made packs: Craftpix pixel art, Kenney sounds (CC0), four tracks by Sonican from Pixabay and the Jersey 10 font, with a Noun Project hand icon for the tutorial. Both versions are branches of one core: fixes land in the core first and then go to each branch. The Playgama version, released first, was eased from player data (a shorter tutorial, no game over in the first spring, slower speed and fewer animals); the itch.io version keeps the original difficulty. No AI runs in the game.
- Engine / framework
- Phaser
- Languages
- TypeScript
- Team size
- Not disclosed
- Initial build time
- Not disclosed
- Development time
- 2 monthsDeveloper ReportedReddit (u/SvitsGames)
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
“Claude did most of the typing: about 530 of the ~600 commits are co-authored by it.”- Making a browser game with Claude Code: the workflow, the real test, the PAIN (r/aigamedev)
- Edgy Fox 1.0.0 is out, in its original difficulty (itch.io devlog)
Verification notes: AI use, workflow, tools and asset sources from the developer's post by u/SvitsGames on r/aigamedev (26 Oct 2026, 15:09 UTC) and the developer's reply under it, read from the Arctic Shift Reddit archive on 8 Nov 2026; the post links both versions. Gameplay, controls, credits and the AI disclosure from the itch.io page and the 1.0.0 devlog, re-read on 8 Nov 2026. The commit counts are the developer's figures (the repository is not public) and describe co-authored commits, not a share of the code, so no code share is recorded; the about two months of development is recorded as eight weeks. Developer: itch.io and Reddit account SvitsGames, X account @svitsgames; the post is written in the first person and the credits name only SvitsGames and the asset makers, but no team size, name or location is stated. itch.io: published 18 Oct 2026, 15:11 UTC, updated 20 Oct 2026, 17:23 UTC, Released, HTML5, made with Phaser, English; no rating or download count shown. The Playgama page showed “52 played” on 8 Nov 2026 (observed; not a metric). Asked which version holds players longer, the developer replied “The easy one for sure”. The itch.io build's script was checked: it refers only to GitHub, Phaser and licence pages, with no AI service addresses. The game was not played.
Development history
- Before the itch.io release
The easier version goes up on Playgama's sandbox first, where player data leads to a shorter tutorial and an easier start.
DeveloperReddit (u/SvitsGames) The original, harder version is published on itch.io (15:11 UTC); the 1.0.0 devlog explains the difference.
The developer describes two months of building the game with Claude Code on r/aigamedev.
DeveloperReddit (u/SvitsGames)
Game performance
Each figure measures something different — concurrent players, owners, downloads and sales are never interchangeable and are never added together. Labels show where each number comes from.
itch.io
Free in the browser (HTML5), with no ads or sign-up; touch, mouse, keyboard or gamepad, on a phone or a computer. Progress is saved in the browser.
Not publicly available: itch.io rating, Gross revenue.
Browser (official site)
Free in the browser with ads; uses the Playgama Bridge SDK for saves, ads, leaderboards and achievements.
No public metrics recorded for this listing.
Not publicly available: Concurrent players (site), Monthly revenue, Gross revenue.
Reviews & rankings
Not yet reviewed by our editors.
Not currently ranked.
Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| Making a browser game with Claude Code: the workflow, the real test, the PAIN (r/aigamedev) Reddit (u/SvitsGames) | Social post | Oct 26, 2026 | Nov 3, 2026 |
| Edgy Fox by SvitsGames itch.io | Store page | Oct 18, 2026 | Nov 3, 2026 |
| Edgy Fox 1.0.0 is out, in its original difficulty itch.io (SvitsGames devlog) | Devlog | Not confirmed | Nov 3, 2026 |
| Edgy Fox — Playgama Playgama | Store page | Not confirmed | Nov 3, 2026 |
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