AI · alternatives · 2026
24 alternatives to Grassland – Real-Life SimCity
Free Real-World Intelligence: Give Your AI Real-Time Access to the Physical World. Grassland lets developers give their software an API for accessing real life environments regardless of economic, geographic or political barriers.
Grassland is a life simulation game where players build and manage a virtual town. Launched in 2019, it combines city-building mechanics with real-life elements, letting users design urban layouts, manage resources… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Grassland – Real-Life SimCity launched in 2019; newer entries below may have overtaken it.
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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 →
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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 →
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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 →
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It's free to play on steam, but you'll need a computer with a dedicated graphics card. I just released a new version after first releasing it 18 months ago. It's been a hard slog to scrounge time as it's not my day job but that's life. There's a ton of obvious improvements in the future (weather systems, temperature, varying rainfall, ice/snow, more biomes, more plate tectonics, lava, etc) but all suggestions/feedback is welcome.
2023 · store.steampowered.com · its alternatives →
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2023 · plant.max-richter.dev · its alternatives →
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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 →
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Bot Land is no longer playable as of October 22nd, 2020.
2019 · bot.land · its alternatives →
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Hey, Jared Palmer (creator of this playground) here. Really excited to ship this. I’ve been building this over the past few weeks to compare LLMs from different providers like OpenAI, Anthropic, Cohere, etc. At Vercel, I manage our Frameworks division (including Next.js, Svelte, and Turbo) and wanted to also dogfood some of the latest features in a slightly larger application. This playground takes a lot of inspiration from https://nat.dev and is built on Tailwind, ui.shadcn.com, and some upcoming Vercel products we’re announcing soon. We’re going to continue adding models to…
2023 · play.vercel.ai · its alternatives →
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Kingdom▲109A 2D multiplayer virtual gaming world with AI NPC
2023 · nomstead.com · its alternatives →
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SIMA 2▲204Google's most capable AI agent for virtual 3D worlds
Nov 2025 · deepmind.google · its alternatives →
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A multiplayer geography game using Websockets. Contribute to abrenaut/posio development by creating an account on GitHub.
2016 · github.com · its alternatives →
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Waypoint-1.5▲110Real-time generative worlds on everyday GPUs
Apr 2026 · over.world · its alternatives →
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AI town▲99A virtual town where AI characters live, chat & socialize
2023 · github.com · its alternatives →
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How we built native x402 payable API support so AI agents can run simulations and pay per request — no human-in-the-loop billing setup required.
Jun 2026 · cloudworldmodel.ai · its alternatives →
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Viberia▲146Hey HN, This is my take on the agent harness. Everything on an isometric map. Agents are grouped into "buildings" that run in a sequence or a loop; e.g., the CodeForge has an agent that writes a PRD, another one that implements, and a third that reviews. Everything is customizable, you build your own buildings/teams however you want. It's a Tauri app, really light (about 8x less energy than the closest competitor I benchmarked, so it actually runs from a coffee shop on battery). It's macOS only for now, but ping me if you are willing to test the Windows or Linux version. I've been…
May 2026 · getviberia.com · its alternatives →
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Kraina▲99Turn your outdoor activities into a territory game.
Jun 2026 · kraina.cc · its alternatives →
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An offline CLI for turning life goals into quests. Contribute to skorotkiewicz/earth-game development by creating an account on GitHub.
Jul 2026 · github.com · its alternatives →
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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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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 →