Some YouTuber just ripped off Game Maker's Toolkit with an AI clone

"An annoying burden" — Now the AI bros are coming for your voice.

A small YouTube channel has seemingly generated and used an AI clone of the voice behind Game Maker's Toolkit.

Yes, being online in 2025 is markedly different than it was just a few short years ago, and that's largely due to the oversized presence of AI tooling and its hurried, countless outputs littering the once largely human web. We now share the internet at large with bots and computer-generated stuff.

For any possible utility AI may have — and I'm not one to say it has zero practical use cases (programming and healthcare spring to mind) — any goodwill towards these various tools is really hard to champion when so much of what we see from it is pure stolen slop.

We've been through an entire depressing cycle now of creative types being rightly upset about these tech bro machinations and their AI funnels churning out poor facsimiles of folks' real work. Artists are one such obvious, visual example that we've all likely seen — any artist with a particular enough style to cut through gets their work slurped up by an AI image generator, ready to lazily mimic and duplicate at scale.

Another thing these AI tools are getting increasingly capable of is video and audio generation. It starts with the obvious — getting politicians to 'say' questionable things, or having a celebrity 'do' something scandalous.

We started in the uncanny valley, but are quickly reaching a point where it's getting harder to spot a fake — particularly when doomscrolling with your guard down through a vertical video feed of short form, short attention span content.

These dupes are everywhere.

When scrolling though Bluesky, one such dupe that I recently spotted was that of respected YouTuber turned game developer Mark Brown — most commonly known under his Game Maker's Tool Kit moniker.

Brown shared a short clip showing how a YouTube channel has started to use an AI clone of his distinct voice to narrate a most likely ChatGPT authored script. The video, posted on May 18th, has already racked up over 30,000 views — and it's somewhat telling, as typically this channel (which I won't be sharing) gets views in the low hundreds.

The roughly 15 minute video presents an explainer of the recently released Doom: The Dark Ages – and all of the narration uses a somewhat convincing copy of Mark Brown's voice, complete with accent and various intonations. Watch it for a few minutes, and it's clear something is up, but to the casual observer the video may pass muster. It's a worrying development, because as these tools improve and become more broadly available, the risk of seeing more impersonation like this only increases.

We spoke with Brown about this unfortunate development. He noted how although the video isn't claiming to be him in any direct sense he can easily see how it could be used to spread misinformation through his voice, with the potential to harm his reputation.

"On YouTube your voice (and your face) is a massive part of your "brand" and so for that to be lifted is very frustrating. It's akin to plagiarism, but actually feels quite different. More invasive. And a lot more bizarre.

I've reported it to YouTube and I am certain they will help by removing the video. My experience with YouTube with this sort of thing has been largely positive. But beyond that I don't think there's much more that can be done to catch this stuff before it goes live. And because it's so easy to make this stuff it will ultimately become something that creators like me will just have to actively look for and report. An annoying burden."

We find ourselves in a murky legal limbo, where lawmakers, the law itself, copyright, and privacy rules all haven't really caught up to the reality we increasingly find ourselves in.

I'll be curious to see what action YouTube takes, and what their stance is on 'content' like this. We shall see — but in the mean time, remember folks, identify theft is not a joke.