AI · alternatives · 2026
24 alternatives to Exists
Generate your own 3D worlds and team-deathmatch in minutes
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Hi HN community! We want to share AI-town, a deployable starter kit for building and customizing your own version of AI simulation - a virtual town where AI characters live, chat and socialize. Inspired by great work from the Stanford Generative Agent paper (https://arxiv.org/abs/2304.03442). A few features: - Includes a convex.dev backed server-side game engine that handles global state - Multiplayer ready. Deployment ready - 100% Typescript - Easily customizable. You can fork it, change character memories, add new sprites/tiles and you have a custom AI simulation…
2023 · github.com · its alternatives →
- 2
- 3AA
This is a weekend project that spiraled out of control. I was originally trying to get Claude to play a ROM of the SNES SimCity. I struggled with it and that led me to Micropolis (the open-sourced SimCity engine) and was able to get it to work by bolting on an API. The weekend hack turned into a headless city simulation platform where anyone can get an API key (no signup) and have their AI agent play mayor. The simulation runs the real Micropolis engine inside Cloudflare Durable Objects, one per city. Every city is public and browsable on the site. LLMs are awful at the spatial stuff, which…
Feb 2026 · hallucinatingsplines.com · its alternatives →
- 4IB
I've been working on an MMORPG that is now in alpha as a solo developer. Here are the major open source technologies that I use: Blender - 3D modeling software for creating the overall environment and every game object. I've gotten a lot of CC and Public Domain assets from https://poly.pizza GLTF - I export assets from blender to the GLTF asset format JSON - I write a JSON config for every game object that describes things like its name, its interactions, its collisions, etc. Node.js exporter - I iterate over the environment and every asset to create a scene hierarchy. I use…
2024 · alpha.reconquer.online · its alternatives →
- 5
Most games have limits. You can only use preset features, need coding for customization & adding mods, require expensive extra devices. We wanted to remove those barriers. That’s why we are building space zero—a browser based 3D world powered by AI. We plan to build players can freely mix items to generate unexpected creations with unique properties and sounds. Also the world itself is dynamically generated, evolving endlessly. I uploaded a demo version I’ve been working on for the past month! I hope to get any feedbacks or comments :)
2025 · 0.space · its alternatives →
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A social creator platform & true sandbox style creator tools
2023 · worldsbeyondnft.com · its alternatives →
- 8
I open sourced my HTML5 multiplayer 3D voxel browser game engine.
2023 · kevzettler.com · its alternatives →
- 9
Took a break from the falling sand simulation blog posts this week to work on another small project. It's a little pixel world generator- each time you visit, you'll see a new little world. I really like this stuff and had a blast building it yesterday!
2022 · jason.today · its alternatives →
- 10IM
I've posted this game here before, hopefully a repost is fine as the game has changed quite a bit (improved AI, improved mapeditor, much quicker gameplay, etc). Game is based on JavaScript/Canvas and WebSockets. On the browser side the map is pre-rendered (as a background image), just the mobile units/buildings and animations are dynamically rendered. The lobby server is made in node.js, but the game server is C++ for performance reasons (mainly the pathfinding). I found the C++ WebSocket libraries out there to be too difficult to use so I made my own based on the rfc. Overall I…
2022 · battle-of-flags.com · its alternatives →
- 11AS
2016 · erkaman.github.io · its alternatives →
- 12
- 13
3D Animation and Automated Rigging platform powered by Machine Learning. Unlimited 3D models for games, apps and the metaverse.
2023 · anything.world · its alternatives →
- 14
~spaces~ V2▲64virtual universe w/ you can create worlds and meet friends
2021 · apps.apple.com · its alternatives →
- 15
VoxCraft▲116Create AI generated 3D model from text prompts or images
2023 · discord.com · its alternatives →
- 16
Dear Hacker News, I'm kindly asking for your participation in the open beta for my AI-managed mini-games website. Thank you in advance! For a limited time window, I'm setting the all-free feature flag to true. I hope you have a lot of fun exploring the AI's sense for games! Here and there, I tweaked it to help with visual consistency. I would be deeply grateful if you opted into analytics. $2,300 in API tokens... Cheers!
Jun 2026 · minigames.world · its alternatives →
- 17
- 18
An in-browser, freely explorable, 3D game across infinite universes procedurally generated.
2021 · across-multiverse.com · its alternatives →
- 19
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- 22
Myblockworld▲59Build a 8 bit world with the rest of the internet.
2016 · myblockworld.com · its alternatives →
- 23
Create & destroy on an unimaginable scale
2015 · universesandbox.com · its alternatives →
- 24
Craft and grow your own village
2015 · apps.apple.com · its alternatives →
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- AI-town, run your own custom AI world SIM with JavaScript alternatives
- Anything World alternatives
- AI agents play SimCity through a REST API alternatives
- I built an indie, browser-based MMORPG alternatives
- AI-native browser game that users can craft unlimited 3D items alternatives
- Buenoverse alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →