Meet Atomos — by far the most capable engine we’ve ever built. It’s a different kind of leap for Tesana: not a longer list of features, but games that are simply smarter, more creative, and more polished the moment they finish generating.
If you’ve made a game with Tesana before, nothing about how you work changes. You describe what you want, and the AI builds a real, playable game. Atomos just makes what comes back noticeably better.
A leap across the whole engine
Atomos isn’t one new toggle or setting. It’s a smarter engine is across all that Tesana already does, so the improvement shows up everywhere at once.
Smarter. Deeper game logic, more capable characters, and bigger worlds that actually hold together. Atomos understands what you’re going for and fills in the parts you didn’t spell out.
More creative. It comes up with mechanics, twists, and details you’d never have thought to ask for — the kind of ideas that turn a generated game into one that feels genuinely designed.
Fewer bugs. More of your games just work on the first try, so you spend less time fixing and more time playing.
New ideas. Ask for something simple and Atomos will often hand you back a better version than the one you had in your head.
One prompt, not ten
The clearest way to feel the difference is to watch it work. Things that used to take ten rounds of back-and-forth now land in a single prompt. Here are a few we recorded, start to finish.
Spark Rider — “A high-speed hoverboard game across floating sky islands. Rings to fly through, tricks to chain into combos, and a boost that makes you feel unstoppable.” One prompt.
Arcane Covenant — “A dark-fantasy card battler where I duel rival mages in a rune-carved arena. Every spell is a card — wards, fire bolts, counters — and the duel plays out around me as I cast them.” One prompt.
Brinefall — “A retro shooter set in a drowned art-deco city at the bottom of the ocean. Rivet guns, flooded grand halls, and a colossal dive-suit boss guarding the deep.” One prompt.
Emberveil — “A third-person fire mage defending a cozy mountain village from waves of monsters. Flames that spread and scorch, and a hero whose arms literally burn with power.” One prompt.
A model for every kind of build
Atomos is now our flagship — the model we reach for when we want the best possible result. But it isn’t your only option, and it doesn’t have to be:
Atomos — our most capable model. The smartest, most creative builds, for when you want the very best. It’s the default for new games.
Muranyi 3.2 — our balanced all-rounder. Great quality at a lower cost, perfect for everyday building when you don’t need Atomos’ extra firepower.
Muranyi Fast — quick, inexpensive edits. Ideal for small tweaks and fixes when you already know exactly what you want changed.
You can switch between them any time from the model picker in the studio. Every new game starts on Atomos automatically.
More capable, and often cheaper
Atomos is our premium model, and a single prompt costs a little more than Muranyi. But here’s the part that matters: because it gets you there in far fewer prompts, the total cost of finishing a game often comes out lower, not higher.
You only ever pay for the work the AI actually does. So a game that takes one great Atomos prompt instead of ten smaller ones can cost you less overall — with a much better result to show for it.
Try it now
Atomos is live today, and it’s the default for every new game. Open Tesana, describe something you’ve always wanted to play, and see how far a single prompt gets you now.
— The Tesana team