How to Use Google Genie 3: Access, Pricing, Prompts, and Pro Tips

What is Google Genie 3 (and who can use it)?

Genie 3 is Google DeepMind's world model inside Project Genie. It turns a short prompt, a sketch, or even a reference image into a playable world. You control a character, test physics, and remix the scene in seconds. It's wild. It's also a research experiment, not a shipping game engine.

Availability is tight. Project Genie is currently accessible to Google AI Ultra subscribers in the United States who are 18 or older. The plan costs $249.99 per month. Worlds run at 720p and around 20 to 24 frames per second, with realistic physics and keyboard control.

Inside the flow, you get a world sketching step, quick previews, an instant play session, and options to remix and record. You can also download short exploration videos when you want to show progress or share a demo clip.

"Genie 3 is a prototyper's dream. You describe the vibe, press go, and you are walking a character through a playable idea in seconds." Most Agentic

Quick start: access and first launch

I like speed. You probably do too. Here's the shortest path to your first playable world.

• Google account with AI Ultra active, United States region, and age 18+
• Desktop browser that handles WebGL acceleration
• Short prompt ready with environment, character, and goal
• 5 to 10 minutes to experiment and save a video

1. Step 1: Check eligibility 720p output needs a modern machine and an AI Ultra subscription. You must be in the US and 18+.
2. Step 2: Open Project Genie Visit the official Project Genie page to launch the experiment and accept terms. Project Genie
3. Step 3: Start a new world Pick world sketching. Enter a text prompt. Optionally add an image or quick sketch. The preview uses Nano Banana Pro before you jump in.
4. Step 4: Generate and play Generation takes moments. You get a playable scene right away.
5. Step 5: Remix and record Adjust your prompt, change rules, and download an exploration video to document progress.

Create your first world: prompt patterns, characters, controls

Prompts drive everything. Use this simple formula so Genie nails the setup on the first try.

Examples you can paste:

• "2D platformer forest, bright cartoon, fox hero collects coins; gravity; moving platforms; gentle difficulty."
• "Top-down sci-fi lab, clean neon, robot courier finds keycards; doors open with switches; light enemies; 3 hits to lose."
• "Cozy town, painterly style, skateboard kid delivers 5 pizzas under 2 minutes; traffic slows you; ramps add speed; low obstacles."

Mini-games are just goals and rules. Say what counts as a win, list hazards, and set a target.

• "Collect 10 items and reach the exit."
• "Avoid obstacles and survive 90 seconds."
• "Escort the friendly NPC to the beacon, enemies push you back."

Controls are simple. Use arrow keys for movement. If you ask for jump, swim, or glide, Genie maps those interactions to movement and physics it has learned. It also keeps short-term memory for minutes, so objects you move or break tend to stay consistent while you play.

Prompt skeletons you can reuse

• Platformer: "[2D biome], [art style], [character], [collect X], [gravity + moving platforms], [easy|normal|hard]."
• Runner: "Side-scroller city at dusk, painterly, skater dodges traffic, collects tickets, ramps boost speed, 90 seconds survival."
• Puzzle: "Isometric warehouse, low-poly, robot moves crates to targets, pressure plates open doors, 3-level set."
• Combat-lite: "Arena desert, stylized, ranger stuns simple enemies, waves of 3, collect health packs, 2-minute timer."

Iterate fast: remixing, refining, and mini-game patterns

This is where Genie shines. Change one line, get a new feel in seconds. Keep what works, toss what doesn't.

Rapid remix loop

1. Lock your hero: "Keep character, keep movement."
2. Swap the biome: "Change environment to desert ruins with sand physics."
3. Tune difficulty: "Increase platform spacing by 15 percent, add 2 moving hazards."
4. Clarify goals: "Collect 15 gems, exit gate opens when gems collected."
5. Limit scope: "Reduce props, keep 3 object types only."

Mini-game patterns that just work

• Collect and exit: X items unlock the gate. Good for tutorials.
• Time survival: Stay alive for N seconds, with escalating hazards.
• Escort: Keep an NPC safe while moving to a beacon.
• Switch puzzle: Step on switches in order to open doors.
• Boss-lite: One large enemy with predictable telegraphs.

Troubleshooting fast

• Stutter or lag: Reduce object count and particle effects. Avoid heavy fog.
• Wonky physics: Name the verbs. "bounce on pads, friction low on ice, slide on slopes".
• Character stuck: Ask Genie to widen corridors by 20 percent and smooth collision.
• Generation fails: Shorten the prompt. Remove extra adjectives. Regenerate.
• Session glitch: Refresh, try another browser, or reset network.

Limits, caveats, and troubleshooting

Known constraints

• Export and sharing: There is no public export pipeline for games. You can download exploration videos.
• Performance cap: 720p, roughly 20 to 24 fps. It's fine for prototyping, not for shipping.
• Access: AI Ultra subscription, US region, 18+. Availability can change.

Fix common issues

• Shorten prompts and remove fluff adjectives
• Reduce objects, enemies, and particles
• Refresh the browser session
• Try a different browser or network

Genie 3 vs alternatives: when to use what

You want the right tool for the job. Here's the clean split I use.

Agent workflow tie-ins

This is Most Agentic, so let's talk agents. Genie 3 pairs well with agent-driven product loops. A practical setup:

1. Spec agent: Take user stories and generate 3 prompt variations per mechanic.
2. World agent: Push those prompts into Genie sessions and record short clips.
3. Review agent: Score clips for clarity, difficulty, and completion time.
4. Design agent: Propose the next iteration, trim scope, and track a prompt library.
5. Builder team: Move the best loops into a real engine for shipping.

How to write better prompts: patterns that save time

Environment and style

Set the tone in 5 words: "2D jungle cartoon" or "painterly city at night." Avoid long prose. Genie responds better to clean labels than flowery text.

Character and verbs

Say the hero, then the actions. "Cat thief climbs, dashes, and wall-jumps." If you need stamina or health, say the counts. "Stamina 100, drain on dash."

Goals and constraints

State win and loss. Cap the scene. "Collect 12 gems, 3 lives, no fall damage."

Why Genie
3 matters for builders

I'm blunt. Genie 3 is not here to ship your game. It's here to remove the dead time between the idea in your head and a playable loop on screen. That's gold for founders and product people.

• Pitch better. Show a playable idea instead of a deck.
• Test faster. Try three mechanics over lunch, pick one to build.
• Spend smarter. Keep engine work for ideas that already prove fun.

Under the hood, Genie uses an autoregressive model to generate frames and predict world changes as you act. It learned physics from huge video corpora, which is why interactions feel natural. You get real-time control, short-term memory that lasts minutes, and stability in both look and layout over a whole session.