How our AI builds games
Tesana doesn't generate a picture of a game — it builds a real, playable one. Our research spans the model that writes the game and the way it works: Atomos, our most capable game engine, and Loop, the build mode that keeps going long after you've walked away.
Meet Atomos, our most capable game model
Atomos is the strongest model we've ever shipped. Describe a game and it builds a real, playable one — smarter, more creative, and with fewer bugs than anything before it. The video above is what a single prompt looks like today.
You don't need any technical setup or engine knowledge. You describe what you want to play; Atomos writes the game behind it.
Smarter, and more creative
Atomos builds cleaner, more coherent games that are easier to extend over time — and it comes up with mechanics, twists, and ideas you'd never have thought to ask for. The result is games that work the first time more often, and worlds that hold together as they grow.
Better games, across the board
Atomos produces more polished games at every stage of creation: • Smarter — deeper game logic, better characters, bigger worlds that hold together • More creative — fresh mechanics and ideas, not just what you asked for • Fewer bugs — more of your games just work on the first try • One prompt, not ten — big builds that used to take many rounds often land in one Each of these compounds, so the same prompt produces a noticeably better game than it did before.
Loop: a game that builds itself
Atomos is also the model behind Loop, our long-horizon build mode. Where a normal build happens once and hands over, Loop keeps going. It splits your game into areas and builds them in parallel, opens the game and looks at what's on screen, finds what's weak, and builds it again — better each time. It runs for hours, unattended, until the work holds up.
Judged by a separate critic
The part that changes everything: when an area is finished, a second AI — one that had no part in building it — reviews it against a real, shipped game in the same genre and scores it. Anything that falls short goes straight back to be rebuilt. That cycle of build, play, judge, and rebuild is what makes a game from Loop feel designed rather than generated.
A model for every kind of build
Atomos
Our most capable engine. The smartest, most creative builds, for when you want the very best result. Included with Max and Ultra.
Muranyi 3.5
Our balanced all-rounder. Great quality at a lower cost, for everyday building when you don't need Atomos' extra firepower. Any purchase unlocks it for good — a credit pack counts.
Muranyi Flash
Fast and inexpensive, and it builds whole games — not just edits. Every account starts here, and it is what the free daily credits are sized for.
Try it on your next game
Every account builds on Muranyi Flash from day one. Loop is in the mode picker, right next to Build and Plan.
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