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Rosebud AI alternative: how Modder compares

Free tiers, code export, multiplayer and testing, side by side.

By the Modder team

Updated · 3 min read · Tested

One option

Rosebud AI

Free plan
Yes: 8,000 credits a week, with project limits
Paid plans
$15, $30, $50 and $100 a month
Engine
three.js; 3D, 2D and voxel styles

Our side

Modder

Free plan
Playing is free; making needs a plan or a one-off top-up
Paid plans
$7.99, $14.99 and $39.99 a month, or one-off top-ups
Engine
three.js with Rapier physics; any camera, 2D and 3D
On this page
  1. Rosebud AI and Modder
  2. Where each one is better
  3. Who should pick which
  4. Moving a project over
  5. Questions

Verdict

Rosebud and Modder both turn a description into a browser game built on three.js. Rosebud has a free plan, AI characters you can chat with inside games, asset generators and a Windows export, and a much bigger community. Modder has no free builds, but its agent plays every game in a real browser and fixes what it finds before you see it, its games have online rooms for friends and same-keyboard play built in, and its paid plans start lower. Pick Rosebud if you want to start free or build around AI characters; pick Modder if you want a finished, tested game to play with friends.

Rosebud AI and Modder side by side

Rosebud AI compared with Modder
WhatRosebud AIModder
Free planYes: 8,000 credits a week, with project limitsPlaying is free; making needs a plan or a one-off top-up
Paid plans$15, $30, $50 and $100 a month$7.99, $14.99 and $39.99 a month, or one-off top-ups
Enginethree.js; 3D, 2D and voxel stylesthree.js with Rapier physics; any camera, 2D and 3D
Tests its own gamesNot described on their pagesPlays each game in a browser, reads screenshots and errors, fixes them
MultiplayerCo-op, PvP and persistent worlds, by their pagesOnline rooms up to 10 with bots in empty seats; 2 to 4 on one keyboard
AI characters in gamesYes: NPCs with memory and dialogueNo; game characters run on rules, not live AI
CodeEdit in the browser from $15; download from $50Edit every file in the Studio; download on Max
ExportsWindows desktop build on Pro and upWeb only, hosted on Modder
Where games are playedRosebud's /play pagesModder's portal, with categories, search and a page per game

Where each one is better

Rosebud AI is better at

  • A real free plan, with weekly credits and no card, so you can try it before paying.
  • AI characters inside games that remember and talk back, which Modder doesn't do.
  • Standalone asset tools: 2D asset, sprite sheet, 3D model and skybox generators.
  • A Windows export for desktop releases, and a far larger community (they say 2.5 million games made).

Modder is better at

  • Every build is played and fixed by the agent before you see it, with real key presses, screenshots and error logs.
  • Multiplayer that works out of the box: invite-link rooms for up to 10 friends with bots filling seats, or up to 4 on one keyboard.
  • Lower prices to start making: plans from $7.99 a month and one-off top-ups with no subscription.
  • A game portal around the maker: published games sit beside hand-built Modder Originals, with categories and search.

Who should pick which

If you're curious and don't want to pay anything yet, Rosebud's free plan is the easy start, and its AI characters open up kinds of games (talk-to-the-detective mysteries, chatty companions) that Modder doesn't make. If you plan to sell a desktop game, its Windows export matters.

If you want a game that works the first time you press Play, Modder's testing loop is the difference: the builder spends a large share of each build playing the game it just wrote and fixing what's wrong. And if the point is playing together, Modder's rooms and same-keyboard mode come built in, with bots so a match never waits for a full lobby.

Moving a project over

There's no importer from Rosebud. The quickest way across is to describe your game to Modder in a sentence or two, including what you liked about the version you had, and let it build fresh. If you have downloaded code, you can add its files to a Modder project in the Studio, but the engines differ, so a fresh build is usually cleaner.

Questions

Is Rosebud AI free?

Rosebud has a free plan with 8,000 credits a week and project limits, according to its pricing page on October 27, 2026. Paid plans start at $15 a month.

Is Modder free?

Playing every game is free with no account. Making and remixing games needs a plan or a one-off credit top-up.

Can I download my game's code?

On Rosebud, from the $50 Pro plan. On Modder, on the Max plan. Both let you view and edit code in the browser on paid plans.

Which is better for multiplayer games?

Both support multiplayer. Modder builds it in from the prompt box: invite-link rooms for up to 10 with bots, or 2 to 4 on one keyboard. Rosebud's pages describe co-op, PvP and persistent worlds.

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