3 Sources
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Vibe-Coded Pokémon Fan Project Developer Is Outraged At AI Clampdowns On IP Infringement After Spending Thousands Per Month
They insist the game will still release, but lament it's harder to get Claude to make the game for them The person behind an up-and-coming vibe-coded fan game based on the Pokémon franchise has come out against new policies by Claude owners Anthropic, restricting the genAI tool's willingness to
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"Claude models are starting to refuse work on Pokemon fan projects," says vibe coder spending "up to $2,000" a month on Pokemon fan game
The dev behind Pokemon Arena 2D says the project is still coming, even with Anthropic's crackdown Anthropic recently changed Claude to "prevent IP infringement," altering the LLM's rules so it won't help copy existing games. One proudly pro-AI dev at work on a Pokemon fan game is starting to feel
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Pokémon Fan Who Spent Thousands of Dollars on AI Tools Upset as Anthropic Finally Begins Crackdown
A Pokémon fan who claimed to be spending thousands of dollars each month building a vibe-coded AI project is now complaining after Claude AI maker Anthropic finally introduced copyright limitations. Claude models are now "starting to refuse" to work on projects that include official Pokémon
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A developer behind Pokémon Arena 2D has been spending up to $2,000 per month using Claude AI tools to build the fan game. But Anthropic's new policies restricting IP infringement have caused the AI to refuse further assistance, sparking frustration from Big Kid Nation who insists the December release will proceed despite the setback.
Big Kid Nation, the developer behind the viral Pokémon fan game project Pokémon Arena 2D, is facing unexpected challenges after Anthropic implemented new restrictions preventing its Claude AI tools from assisting with IP infringement
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. The developer has been spending over $2,000 per month entirely on tokens to develop the project through vibe coding, a development approach that relies heavily on AI-assisted creativity2
. Working 10-14 hour days for most of the year, Big Kid Nation claims to have invested hundreds of hours prototyping different Pokémon mechanics, ideas and balance systems for the arena battler1
.Claude models refuse work on projects that violate intellectual property rights under Anthropic's updated usage policy. When Big Kid Nation asked whether Claude could use Pokémon sprites stored on his PC to continue development, the AI explicitly declined. "The sprites show Pokémon characters, so a game built from them is a game starring those characters," Claude responded, suggesting the developer use original characters instead
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. Anthropic developer Addy Osmani confirmed weeks earlier that "using Claude to infringe IP is against our usage policy"2
. The new limitations specifically restrict the AI's ability to work with The Pokémon Company's intellectual property, marking a significant shift in how AI clampdowns on IP infringement are being enforced across development tools.Pokémon Arena 2D is an arena battler where players select moves for their creatures to perform in real time, distinguishing it from mainline or spin-off Pokémon games
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. The game pulls visuals from a community-made Pokémon sprite library and has been in development since February1
. Big Kid Nation stated he is creating the passion project because Nintendo won't develop "the epic Pokémon game you know we all want"1
. The project has gone viral on social media in recent weeks, attracting attention for its AI-driven development approach and ambitious scope.
Source: GamesRadar

Source: IGN
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Big Kid Nation defended the project against accusations of creating "AI slop," emphasizing the substantial personal investment involved. "My life went down hill. I lost everything. I'm here to achieve something. Pokemon is my entire childhood and this is everything to me now," the developer stated
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. The developer noted spending up to $2,000 in expenses monthly alongside the intensive daily work schedule, claiming never to have monetized the project through platforms like Itch.io or Patreon2
. "It's almost exclusively vibe coded now," Big Kid Nation explained in the project's Discord, adding "We are very pro AI for creative game development" and emphasizing the approach delivers the best results in quality and time2
.Despite Claude's refusal to assist further, Big Kid Nation insists the game remains on track for a December release on mobile and PC platforms
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. However, industry observers note the project will likely face a DMCA strike from The Pokémon Company upon release for using protected intellectual property1
. This situation highlights the growing tension between AI-assisted creativity and intellectual property protections, as developers attempt to leverage AI tools for fan projects while companies like Anthropic implement safeguards. The case raises questions about how AI platforms will balance supporting creative development against preventing IP infringement, and whether developers can successfully navigate these restrictions while pursuing their vision.Summarized by
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