make a game with friends
Make a game with friends, then play it together
Talk and draw the idea with your friends on one board, let your agents build it, and play it together. Summer handles the servers, the parties and the saves.
The best game ideas start in a group chat. Someone says "what if we made a game where" and everyone adds a rule. Summer Engine is built for that moment. You and your friends make the game together, your AI agents do the heavy building, and the result is a real multiplayer game you all play.
There are two halves to making a game with friends: building it together and playing it together. Summer covers both. The Summer Board is one live board for each game where your group talks, draws and plans while agents pick up the work. The multiplayer side is part of the engine, so the game you build is one your friends can join from their own computers.
You do not need a programmer in the group. Describe what you want and the agent writes the code. If someone in the group does code, they can open every script and change it. Everyone works on the same project.
Plan it together on one live board
Every Summer game gets a Summer Board. Your friends join, talk and draw on the same canvas: the map, the characters, the one rule that makes it funny. Agents join the board too. The Summer agent, Claude Code, Codex or any agent you bring can take a sketch or an idea from the board and start building it into the game.
Let the agents do the heavy lifting
Each person can work with their own agent on the same game: one on the level, one on the characters, one on the rules. Ask in plain words, like "make the floor turn to lava every thirty seconds" or "give each player a different hat", and the agent changes the project. Summer can also make the art, sound and music your game needs.
Play it together with no server setup
Summer runs a server for every match, so nobody in the group has to host or share an address. Friends form a party, the leader presses Play, and everyone lands in the same match on the same team. If someone drops out, the rest keep playing, and they get their seat back when they reconnect in time.
Make it about your group
Put your friends in the game. Name the levels after your inside jokes, turn your group into the characters, keep a score board of who won the most rounds. Player progress saves across matches and devices, so the rivalry carries over to next week.
Share it beyond your group
When the game is ready for more players, publish it on Summer Games in a few steps. Your agent prepares the store page and the build and asks before it goes live. Your friends invite their friends, and new players join with their Summer account in the Summer Games app on Mac and Windows.
Frequently asked questions
How do I make a game with my friends?
Download Summer Engine, start a game and invite your friends to its Summer Board. Plan the idea together, ask your AI agents to build it, and test it with several players on one computer using Local Play. When it plays right, publish it and play together online.
Can we work on the same game at the same time?
Yes. The Summer Board is one live board for each game. Your group talks and draws there together, and agents join the board and start working on what you planned.
Do any of us need to know how to code?
No. You describe the game in plain words and the agent writes the code. Anyone in the group who codes can open and change every script, so beginners and programmers work on the same project.
How do my friends play the game we made?
Publish it on Summer Games. Friends sign in with their Summer account, form a party and join the same match in the Summer Games app on Mac and Windows. Summer runs the server for every match, so nobody has to host.
What kind of game should we make together?
Short-round games work well for a first project: a party game with secret roles, a co-op platformer where you need each other to open doors, or an arena game with a score board. A shared world that saves is a good next step when the group wants something to come back to.
Is it free?
Summer Engine is a free download. Hosted services such as multiplayer servers and AI generation are billed from your Summer credits, and your dashboard shows your spend.
Keep exploring
More ways to build with Summer Engine
AI game maker
The hub for making complete 2D and 3D games by describing them.
OpenOnline multiplayer game maker: you make the game, Summer runs the servers
Describe the game you want to play with other people. Your agent builds the client and the server, and Summer hosts every match, so nobody has to run a server or share an address.
OpenMake a game with AI, free, by describing what you want
Type the game you have in mind and Summer Engine builds it for real. The download is free, starting is free, and your first playable game costs nothing.
OpenMake a Steam game with AI, from prompt to store page
Describe your game and Summer Engine builds it, then exports the native Windows build you upload to Steam. You own the project, you keep your revenue.
OpenHow to make a game with AI, no coding required
A plain walkthrough of the whole process: what to download, what to type, and how a first idea turns into a game you can play, all without writing a single line of code.
OpenMake a video game with AI, the kind you actually play
Pick a genre, describe the video game you grew up wanting to make, and Summer Engine builds a complete title: gameplay, levels, menus, art, and sound in one project you own and ship.
OpenHow to make a game with no experience, explained step by step
No coding background, no art skills, no game design degree. Here is the honest path from "I have never done this" to a real game you can play, and where Summer Engine fits in.
OpenMake a horror game with AI for genuine tension
Describe a horror game and Summer Engine builds tense pacing, a flashlight or sanity system, line-of-sight enemy AI, locked doors, and unsettling audio, inside one project you own and can export as Windows and macOS builds.
OpenMake a puzzle game with AI and a clean difficulty curve
Describe a puzzle game and Summer Engine builds a core rule, a level progression, and win conditions, inside one project you own and can export as Windows and macOS builds.
OpenOnline multiplayer game maker
Matchmaking, parties, saves and leaderboards, hosted by Summer.
BrowseMake a game about your people
Answer a few fun questions and turn your friends into a game.
BrowseCo-op game maker
A squad of friends against the game, with progress that carries over.
BrowseParty game maker
Short rounds, secret roles and a wins board for up to 16 players.
BrowseStart building your game now
Download Summer Engine, describe what you want, and watch it come together. Free to start, no coding required.