VOLT NOMAD
A compact incremental boss rush: every click deals damage and builds CHARGE for a growing automatic arsenal.
Official site tsgamestudio.itch.io, verified Nov 3, 2026. Linked from the developer's Zenn article (“VOLT NOMADをブラウザで遊ぶ”), whose author links the GitHub account takahiro-saeki; the itch.io credits name Takahiro Saeki. Also the game page of the official AI Browser Game Jam 4 entry.
Where to play
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- Play free — itch.ioitch.ioReleased · HTML5 (Godot); mouse, keyboard, touch or gamepadFree
Plays in the browser on itch.io. No download.
Browser (no download) · Official link verified Nov 3, 2026.
About VOLT NOMAD
An incremental boss rush in the browser, made in Godot for AI Browser Game Jam 4 on itch.io. You play a recovery automaton descending into an underground world engine: each manual command deals damage and generates CHARGE, which you spend across five gear trees (86 nodes) to evolve drones and automatic weapons, and you inherit the cores of the six machine beasts you defeat, in any order. Three hunts reach a quick normal ending; the rest, two abyssal bosses and a true ending are there for players who stay. There is no game over: the challenge is finding a build that outpaces the required damage. It supports mouse, keyboard, touch and gamepad, has full English and Japanese text, and a session takes about half an hour. The itch.io credits say the code, systems design, balancing and UX copy were done by OpenAI Codex in collaboration with Takahiro Saeki, who directed, playtested and made the final decisions; pixel art came from PixelLab, cinematic art from OpenAI image generation and music from Suno. It is free.
How it was built
VerifiedThe itch.io page's production disclosure says the game was made through an “AI-heavy, human-directed workflow”: code, systems design, balancing, UX copy and production support by OpenAI Codex in collaboration with Takahiro Saeki, who handled direction, playtesting, selection and final decisions. In a Zenn article the developer describes putting Codex into the whole production line rather than one-off code generation: Codex worked from Markdown specs with quality gates, implemented, ran tests and updated progress and decision logs, and a headless release audit played all 1,440 routes (any order of the six beasts, times two choices of boss) through to the end; the developer chose which of 92 PixelLab art candidates and which Suno tracks to keep by playing. The disclosure also says the loop included direct implementation changes, without saying how much code was written by hand. Other AI tools: PixelLab (pixel art), OpenAI image generation (cinematic art), Suno (music).
- DeveloperOfficial jam entry: “AI Tools Used: OpenAI Codex, PixelLab, OpenAI Image Generation, Suno”. — itch.io
- OfficialJam rule: development must be heavily AI-assisted, with the majority of the game AI-generated. — Focaccai (itch.io)
- DeveloperDeveloper's article (9 Sep 2026) on how Codex was used for planning, Godot implementation, testing and submission prep. — Zenn (ヒロ)
Spec- and test-driven with Codex: three quality gates (30-second, 5-minute and 20-minute versions) written as Markdown completion criteria, game rules kept in a state model separate from the Godot UI so that simulations and a headless audit could play the campaign to the end, and store text, AI disclosure and release checklist kept in the repository. The developer playtested, judged feel and picked assets; the developer says 53 commits went in between 1 August and the release candidate.
- Engine / framework
- Godot 4.6
- Languages
- Not disclosed
- Team size
- Not disclosed
- Initial build time
- From 1 Aug 2026 to the jam release candidate, 53 commits (submitted about 7.5 days before the 18 Aug deadline)Developer ReportedZenn (ヒロ)
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
“今回、Codexが担ったのは速度と記録と網羅です。私が担ったのは、プレイして違和感を言葉にし、採用と不採用を決め、どこで完成とするか判断することでした。”Verification notes: AI use from the developer's own production disclosure on the itch.io page, the AI tools listed in the official AI Browser Game Jam 4 entry, and the developer's Zenn article of 9 Sep 2026, which links the itch.io page. The Zenn author (ヒロ, account hirodeath) links the GitHub account takahiro-saeki, matching the name in the itch.io credits. Jam rules and dates from the jam page (ran 1–18 Aug 2026; majority of the game must be AI-generated). The entry was submitted 7 days 12 hours before the deadline, which puts it at about 10 Aug 2026; itch.io shows no publish date, so the release date is left blank. Jam results (123 entries): #76 Overall, #38 Theme, #54 Graphics, #66 Audio, #80 AI Usage, #82 Fun, from 6 ratings. Team size is not stated: the credits name only Takahiro Saeki as a person, but music is credited to “Suno / neonlament” and it is not clear whether neonlament is another person. The production repository linked from the article (github.com/takahiro-saeki/game-jam-lab) could not be opened from our environment, so the game is not marked open source. No itch.io rating is shown on the game page.
Development history
Development starts as AI Browser Game Jam 4 opens (the jam ran 1–18 Aug 2026 and required the majority of each game to be AI-generated).
- Around 10 Aug 2026
Submitted to AI Browser Game Jam 4, 7 days 12 hours before the deadline.
Officialitch.io - After voting closed on 1 Sep 2026
Jam results: #76 of 123 overall and #38 for theme, from 6 ratings.
Officialitch.io The developer publishes an article on Zenn about using Codex across planning, Godot implementation, testing and submission.
DeveloperZenn (ヒロ)
Game performance
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Sales & revenue (all platforms)
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Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| VOLT NOMAD by tsgamestudio itch.io | Store page | Not confirmed | Nov 3, 2026 |
| VOLT NOMAD by tsgamestudio for AI Browser Game Jam 4 itch.io | Official site | Not confirmed | Nov 3, 2026 |
| AI Browser Game Jam 4 Focaccai (itch.io) | Official site | Not confirmed | Nov 3, 2026 |
| Codexをゲーム制作ラインに入れる。企画、Godot実装、テスト、提出準備をつないだ方法 Zenn (ヒロ) · Japanese | Devlog | Sep 9, 2026 | Nov 3, 2026 |
