Work · alternatives · 2026
24 alternatives to Ultreïa - Demo
An Indie Game
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Ultreïa - Demo launched in 2020; newer entries below may have overtaken it.
- 1KA
Kandria, an open world action RPG platformer written in Common Lisp is now out and available! A prior discussion of Kandria can be found here: https://news.ycombinator.com/item?id=32043026. I'm the lead developer and sole programmer for the project. Would be happy to answer any questions about it!
2023 · store.steampowered.com · its alternatives →
- 2MA
It all started as an experiment to see if I could build a game making heavy use of Deno and its SQLite driver. After sharing an early build in the „What are you working on?“ thread here, I got the encouragement I needed to polish it and make a version 1.0 for Steam. So here it is, Microlandia, a SimCity Classic-inspired game with parameters from real-life datasets, statistics and research. It also introduces aspects that are conveniently hidden in other games (like homelessness), and my plan is to continue updating, expanding and perfecting the models for an indefinite amount of time.
Dec 2025 · microlandia.city · its alternatives →
- 3
A social creator platform & true sandbox style creator tools
2023 · its alternatives →
- 4
- 5LP
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 →
- 6AA
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 →
- 7
A multi-agent world model you can play
May 2026 · agora.odyssey.ml · its alternatives →
- 8
- 9
SIMA 2▲204Google's most capable AI agent for virtual 3D worlds
Nov 2025 · deepmind.google · its alternatives →
- 10
Build unreal games with AI agents
Jun 2026 · unrealengine.com · its alternatives →
- 11
- 12
Swipe decision game, explore, and conquer the galaxy
2024 · its alternatives →
- 13
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- 15
- 16
- 17
- 18
- 19
- 20AS
FYI, I try to release something random on the 1st and 15th of every month, this was my latest. you can see my full list of projects on my twitter: https://twitter.com/lisperati/status/1543003744161484800
2022 · dreambookgame.com · its alternatives →
- 21
Mythora▲2AI RPG world you build together — Worlds remember everything
Apr 2026 · mythora.app · its alternatives →
- 22
Use a Projector as a Spatial Augmented Reality console!
2022 · its alternatives →
- 23AN
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 →
- 24
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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 →