If you’ve been anywhere near Steam or gaming Reddit lately, you’ve likely seen the firestorm. Developed by solo dev Grolaf (under the publisher Crunchfest), CODEX MORTIS isn’t just another indie bullet hell. It’s a necromantic survival game with a massive asterisk: the developer claims it is 100% AI-generated.
From every line of TypeScript code to the gothic sprites and the eerie background music, Grolaf says the entire project was “vibe-coded” into existence using LLMs like Claude and ChatGPT in just three months.
Why the Internet is Fuming
In a year where industry layoffs are still a raw nerve and “AI slop” has become the ultimate gaming insult, CODEX MORTIS landed like a grenade. The backlash was instantaneous:
The “Asset Flip” Argument: Critics on Steam and Reddit have branded it a glorified tech demo, calling it a “slippery slope” toward a future where storefronts are flooded with soulless, prompt-engineered clones.
The Authenticity Debate: Some devs have even accused Grolaf of “not being AI enough,” claiming a total novice couldn’t have handled the complex architectural logic (built on bitECS and Electron) without significant human intervention.
The “Slop” Label: PC Gamer famously questioned its honour as a milestone for “slop everywhere,” sparking a wider debate on whether a game made without “the human touch” can ever truly have a soul.
The Plot Twist: People are Actually Playing It
Here’s the part the “antis” don’t want to hear: It’s working.
Despite the “Mixed” reviews and the vitriol in the comment sections, the numbers tell a different story. During its demo phase, players stayed for an average of 71 minutes—over four times the industry average for indie demos.
Streaming giant Asmongold even weighed in, calling the gameplay “pretty good” and predicting that AI-developed games are an inevitability that will eventually “do well.” It turns out that when you’re busy dodging waves of undead and theory-crafting synergies between five schools of dark magic, you care a lot less about who—or what—wrote the code.
Innovation or Infection?
Grolaf describes the process as giving a developer an “exoskeleton.” By using AI to handle the “mental exhaustion” of engine-less development, a solo creator was able to ship a fully playable, systems-driven game in a fraction of the usual time.
Whether CODEX MORTIS is a landmark achievement or a warning sign remains to be seen. But as it prepares for its Early Access launch on March 26, 2026, one thing is certain: the era of “Vibe-Coding” is no longer a sci-fi concept. It’s on your wishlist.
What do you think? Is CODEX MORTIS a creative breakthrough for solo devs, or is it the beginning of the end for “hand-crafted” gaming?
Find out more here on Steam – https://shorturl.at/jDh6R
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