How to Make a 2D Game with AI (Step by Step, 2026)

Most guides on making a 2D game with AI stop at the prompt. You type a sentence, something appears, and the article ends before the hard part: turning that rough first version into a game that is actually fun to play.

This is the longer version. We will build one small game from a blank start, a top-down adventure where you explore rooms, fight enemies, and pick up keys, all the way through fixing the boring bits and exporting a real build. Everything here works on the free tier, including export. The examples use Summer Engine because it produces real projects compatible with Godot 4, but the design thinking applies to any AI-native engine.

If you would rather compare the different ways to make a 2D game first, browser tools versus AI-native engines versus AI-assisted Unity, read How to Make a 2D Game with AI and come back. This guide assumes you want the build-a-real-project steps.

What you will build

A small top-down adventure. One player that moves in four directions, two or three rooms connected by doors, a couple of enemy types, a key-and-locked-door puzzle, and a health bar. That is enough to teach every core idea, and small enough to finish.

Why top-down and not a platformer? Platformers live or die on jump physics, and tuning jump feel is the hardest thing for a beginner to get right. Top-down movement is forgiving, so you spend energy on the fun parts instead of fighting gravity. The same process works for a platformer, and Make a Platformer with AI covers that genre directly.

Step 1: Start from a template, not a blank page

The biggest mistake beginners make is starting from nothing and asking the AI to build everything in one prompt. You get a fragile mess that breaks the moment you change one thing.

Instead, start from a template that already has the genre's bones in place. A 2D adventure or top-down template gives you a working player, a camera that follows it, collision, and a scene structure the AI understands. You are now editing a game that already runs.

In Summer, you pick this from the templates gallery. Open the top-down or adventure template and hit run. You should be moving a character around a room before writing a single word of prompt. That working baseline is what every later step builds on.

Step 2: Describe your game in one clear paragraph

Now describe the game you want, on top of the template. The trick is to be specific about the loop and the win condition, and vague about the rest. Let the AI fill in details, then correct it. Here is a prompt that works:

A top-down pixel art adventure. The player explores three connected rooms. Each room has one or two slime enemies that chase the player and deal damage on touch. The player has a sword swing on the space bar and three hearts of health. One room contains a key. A locked door blocks the third room until the player has the key. Reaching the final room and touching the treasure chest wins the game.

Notice what that prompt does. It names the genre, the core loop (explore, fight, find key, unlock door, win), the input, and a clear win and lose condition. It does not specify damage numbers, enemy speed, or room layout. Those you feel out by playing, and they are easier to tune than to predict.

When you send this, the AI builds the rooms, the enemy behavior, the sword, the health system, and the key logic as actual nodes and scripts in your project. This is what separates an AI-native engine from a browser toy: the output is a real project you own, not a hosted demo. Can You Really Make a Game with AI goes deeper on why that matters.

Step 3: Run it immediately and watch yourself play

The instant the AI finishes, hit run. Do not read the code or tweak anything. Play your game for two minutes and pay attention to what your hands and eyes are doing. You are looking for three things:

• What is broken. The sword does not register. Enemies walk through walls. The key does not unlock the door. These are bugs.
• What is boring. The enemies are too slow to be a threat. Combat is one button mash with no rhythm. The rooms are empty. These are design problems, and they matter more than the bugs.
• What is missing. There is no feedback when you hit an enemy. You cannot tell when you take damage. The win screen is just the game freezing.

Write these down as you notice them. This list is your actual to-do list, and it is far more useful than any plan you could have made before playing.

Step 4: Fix things with small, single-change prompts

This is where most of the work happens, and the rule is one change per prompt. Big multi-part prompts make the AI touch many systems at once, so when something breaks you cannot tell what caused it. Small prompts stay traceable. Walk down your list and turn each item into a one-line request:

The sword swing does not hit enemies right next to me. Make the hit detection more forgiving.

Slimes are too easy. Make them move 50 percent faster and add a second slime to the first room.

Add a red flash and a small knockback when the player takes damage, so it is obvious I got hit.

When an enemy dies, play a pop effect and drop a coin the player can pick up.

Add a win screen that says You Escaped with a play-again button, instead of freezing.

After each prompt, run the game and check that one change. If it made things worse, say so and the AI adjusts. This tight loop, prompt then play then react, is the entire craft of making a game with AI: the AI handles implementation, you provide the taste.

To be honest, the AI will not nail every request on the first try, especially anything involving timing or feel. Expect to send the snappier or slower follow-up two or three times for the mechanics that matter most. That back-and-forth is normal, and is how a human dev would tune it too.

Step 5: Add the parts that make it feel like a game

A working loop is not yet a game. The difference is juice, the small touches that make actions feel satisfying. These are cheap to add with AI and they are what players remember. Ask for them one at a time:

• A sound on sword swing, enemy hit, coin pickup, and taking damage.
• A short screen shake when you hit an enemy or get hit.
• A hearts UI that visibly loses a heart when you take damage.
• A sparkle on the key and coins, and looping background music.

You do not need to make any of these assets yourself. An AI-native engine can generate placeholder sprites, sound effects, and music, or you can drop in your own files later. The point is to feel what juice does. Add screen shake to a hit and play it again. The combat instantly feels twice as good, and you changed nothing about the underlying logic.

Step 6: Open the editor for the things AI is bad at

AI is excellent at building systems and writing scripts. It is weaker at two things: laying out a level by eye, and tuning a single number until it feels exactly right. For both, the editor is faster than prompting. Because Summer produces a real project, you have the full editor available, the same one you would use in Godot 4.

• Paint your rooms by hand. Use the tilemap tool to place walls, decorations, and paths. You design a more interesting space in five minutes of painting than in fifty prompts describing a layout.
• Tune values in the inspector. Change the player's move speed or a slime's damage. Drag a number, run, drag it again. This is faster than prompting and teaches you what each value does.
• Reposition things precisely. Drag the key, chest, and door exactly where you want them.

This is the part beginners skip and should not. Knowing a little about nodes and the inspector makes you dramatically faster, because you stop asking the AI for things you can do in two clicks. Best AI Tools for Godot covers how AI and the editor fit together.

Step 7: Playtest with someone who is not you

You have played your game fifty times and know exactly where the key is. A new player does not. Hand the build to a friend and watch without helping. You will learn more in five minutes of watching someone else play than in an hour playing it yourself. They miss the door, mash the wrong key, ignore the coin you thought was obvious. Each confusion is a thing to fix, usually with one prompt (add an arrow pointing to the locked door) or a small editor tweak.

Step 8: Export your game

When it is fun, ship it. This is where the choice of tool matters most, and where the honest free-versus-paid line sits.

With Summer Engine, export to Windows, Mac, Linux, mobile, or web is on the free tier, with no watermark and no revenue share. You get a real build file you can put on itch.io, send to friends, or submit to a jam. The export pipeline is the same as Godot's, so nothing is locked to a hosted platform. How to Publish a Game on Steam covers the steps from build to storefront. Browser AI tools, by contrast, keep your game on their site, which is fine for a quick share but a dead end if you ever want to sell it.

The honest version of how this goes

Your first hour gets you a rough but playable adventure. The next few sessions are the unglamorous middle: fixing the sword that misses, balancing enemy speed, adding feedback so hits feel real, painting rooms worth moving through. None of it is hard, but it is the work, and AI speeds it up rather than removing it.

What AI genuinely changes is the cost of trying. A bad idea used to cost a day of setup before you could test it. Now it costs one prompt and one playthrough, and the only way to find what is fun is to try many things and keep what feels good.

What to make after your first 2D game

Once the top-down adventure clicks, the same loop scales up to a bigger version with a real boss and an inventory, to a different genre like a puzzle game, a deckbuilder, or a platformer, or into 3D, which Make a 3D Game with AI covers. Each genre starts from its own template. The mechanics change. The loop does not.

Start building

The fastest way to understand any of this is to do it once. Pick the top-down template, paste the prompt from Step 2, and play your game before the hour is out. Summer Engine is free, produces real projects compatible with Godot 4, and exports to Steam, mobile, and web with no watermark. Open it, describe your adventure, and start fixing the boring parts. That last part is the whole job, and it is the fun one.