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.
https://x.com/TesanaAI/status/2061134360984567817
The clip frames a workflow that locks tone and world-building before mechanics. Instead of checking off features, the first prompt establishes a north-star brief for setting and feel, with successive prompts pushing toward a loop that reads coherently on screen. The pitch is speed and cohesion over early complexity.
Founders: Johannes is a Y Combinator alum (W22) from his prior company ITCHY, a D2C subscription for chronic skin conditions. He has more recently promoted Juice, the founders' short-form content automation product, saying in a public post that it reached $1m ARR in under two months. Eric previously built Musicboard, a consumer music community app.
Why it matters: For founders and solo builders, the post is a compact case study in compressing the path from idea to a functional prototype with AI assistance. Prioritizing mood, setting, and interaction style can help converge on something you can play and judge quickly.
How to apply it:
- Start with a high-level brief that nails the mood, setting, and player verbs.
- Keep the initial loop minimal and testable.
- Iterate with prompts that refine feel and readability before layering systems and UI.
- Only then add enemies, progression, and polish.
Bottom line: For founders, this is a clean signal that AI-first, vibe-led prototyping can compress cycle time. Getting to a playable feel in two days with a tight 39-prompt stack and roughly $90 in tokens reframes early game-making as days, not weeks. Adopt the discipline and you increase the odds of faster conviction and more shots on goal.
