How to write a game in Cinevva

You type what you want, Cinevva builds a playable game in your browser, then you change it by chatting. That's the whole loop. The hard part isn't the tool, it's knowing what to say.

We read a week of real sessions to see what separates a prompt that becomes a game someone keeps from one that gets abandoned right after the first build. The pattern was clear, and none of it is complicated. Here's what works.

Start with one clear sentence

The best opening is one or two sentences that name the kind of game and the one thing that makes it fun. "A top-down zombie survival where you carry a flashlight and limited ammo" gives the AI a genre, a camera angle, a core tension, and a constraint to build around. It knows exactly what to make. You can build that opener as written and watch what a specific sentence buys you. If you want a hundred more openers in that shape, our AI game prompt ideas page is all one-liners.

Compare that to "platformer" or "shooter games". Those are real openers we see every day. Cinevva will build something from them, but it's a coin flip whether it's the something you had in your head. The more specific your first line, the closer that first build lands to what you wanted.

Describe the feel, not a famous game

A lot of people open with a single title. Pokemon. GTA. Minecraft. A Roblox game they love. We get it, those are the games that made you want to build one. The catch is those took whole studios years to make, and they don't fit in a browser tab.

So name the parts you actually want instead. If you say GTA, you probably mean "drive around an open city and take on missions". If you say Minecraft, you might mean "place and break blocks on an endless grid to build things". Spell out the mechanic and Cinevva can capture the feel, even though it can't ship the entire franchise. Describing the experience beats naming the brand every time.

Let it build small, then grow it

Cinevva builds a playable slice on the very first turn on purpose. The creators who end up with something they love don't try to pack everything into the opening prompt. They add one thing per message once they can see it running.

"Add traffic cars." "Make the jump higher." "Give me a second level." "Add a health bar." Each change is small, fast, and easy to check, and they stack up into a real game. Trying to cram ten features into turn one usually gets you a shaky version of all ten. One clear change at a time is how the good games get made.

When something is wrong, say exactly what

The most common message that doesn't help is "it doesn't work", or just "fix it". The AI can't see your screen, so it's left guessing.

Tell it three things: what you did, what happened, and what you expected. "When I press space the bird barely hops, I wanted it to flap higher" gets a real fix on the first try. "The car drives through walls instead of stopping" points straight at collision detection. The extra ten words save you three rounds of back and forth.

Be concrete about how things look

Cinevva is good at visuals when you give it something to picture. Colors, shapes, mood, character details. One creator described their hero as "a dark figure with a white cape, white gloves, and glowing white eyes" and got exactly that back.

"Make it look cooler" gives the AI nothing to work with. Instead, name the palette, the vibe (neon, cozy, retro, horror, hand-drawn), and any key character or world details that matter to you. A few concrete words change the whole look.

Bring your own art

You're not stuck with whatever the AI draws. Drop your own images straight into the chat and it'll use them as textures, sprites, or backgrounds. Or open the asset library to pull in free 3D models with no attribution headaches. When you have a specific look in mind, handing over a reference image often works better than trying to describe it. If you'd rather make a model or a sky first and bring it in, the standalone 3D generator and skybox generator produce the same kind of assets outside the chat.

The first build is the slow one, and your work is saved

The first build takes the longest because Cinevva is writing your whole game from scratch. After that, edits come back in seconds. So hang on through that first wait, it really is the worst one you'll have in the session.

And yes, your games are saved. Close the tab, come back tomorrow, open My games, and pick up exactly where you left off. Nothing disappears when you leave.

A good prompt, start to finish

Put it all together and a strong opener looks like this:

"A top-down twin-stick shooter. I'm a little robot in a neon arena, waves of enemies close in, and I dodge and shoot to survive. Make it fast and arcadey."

That's a genre, a character, a setting, a core loop, and a feel, all in four short sentences. Build it, watch it run, then start adding. A boss every five waves. A dash on the shift key. A score multiplier for combos. That's how one sentence turns into a game you actually want to share. For the wider method behind this, including what to do when the first build isn't what you pictured, see how to make a game with AI and the vibe coding guide.

Common Questions

How do I write a game prompt that actually works?

Name the kind of game, the one thing that makes it fun, and what the player is trying to do, in one or two sentences. Describe the experience ("drive around an open city and take on missions") instead of naming a famous title, and hold every extra feature for a later message. That's the pattern that separated the games people kept from the ones abandoned after the first build in the sessions we read.

How do I describe a bug so the AI fixes it on the first try?

Tell it what you did, what happened, and what you expected, in that order. "When I press space the bird barely hops, I wanted it to flap higher" gets fixed in one round, while "it doesn't work" gets a guess. The AI can't see your screen, so the ten extra words replace three rounds of back-and-forth.

Why is the first build slow and the later ones fast?

The first turn writes your whole game from scratch, so it's the longest wait you'll have in a session. Every edit after that changes a small part of an existing game and comes back in seconds. Your work is saved as you go, so you can close the tab and pick up from My games later.

Can I start with a template or another game instead of a blank prompt?

Yes. The 100 AI game prompt ideas page is a hundred one-click starting points sorted by genre, each already in the shape this guide recommends. Pick one, build it, and change a word or add a mechanic to make it yours.

Ready to try it? Open the creator and start building free →

Related

• 100 AI Game Prompt Ideas: one-click openers sorted by genre
• How to Make a Game with AI (No Coding): the full workflow from prompt to publish
• Vibe Coding Games: What It Is and How to Start: the iterate-by-chatting approach explained
• Best AI Game Generators in 2026: how Cinevva compares to the other tools