YC alum-led Tesana shows a 2-day, 39-prompt AI-built game prototype

The Los Angeles startup posted a vibe-first prototyping clip on X; it says it used muranyi-3 and roughly $90 in tokens. Engine and funding remain undisclosed.

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Primary source: X · @givros

Why it matters

If the approach is repeatable, defining tone and world first could let small teams ship playable prototypes in days, not weeks, tightening iteration cycles and reducing upfront scope risk.

YC alum-led Tesana shows a 2-day, 39-prompt AI-built game prototype — The Los Angeles startup posted a vibe-first prototyping clip on X; it says it used muranyi-3 and roughly $90 in tokens. Engine and funding remain undisclosed.

Tesana, a Los Angeles startup led by CEO and co-founder Johannes V. and co-founder and CTO Eric H., posted a video via its X account TesanaAI (@TesanaAI) showing a playable game prototype it says was built entirely with AI in two days using 39 prompts. "This game was vibe coded in 2 days. 39 prompts. 100% AI-built," the team wrote. Tesana says the run used a model it calls muranyi-3 and logged about $90 in token spend so far.…

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