🎮Game Engines arenaBuyer checklist

ai-native userPlug MCP servers into this product so it can use their tools

Core requirement — weighs 3× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvas—Unity—Godot Engine

ai-native userConnect an agent via an official MCP server

Core requirement — weighs 3× in arena scoring · 2 of 8 products fully deliver this today

—Babylon.js✓Phaser✓PlayCanvas~Unity—Godot Engine

ai-native userDrive the product through a documented public API

Core requirement — weighs 3× in arena scoring · 4 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas✓Unity~Godot Engine

ai-native userDelegate tasks to a built-in AI assistant inside the product

Core requirement — weighs 3× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser~PlayCanvas~Unity—Godot Engine

ai-native userPoint an agent at llms.txt or agent-oriented docs

Important, not disqualifying — weighs 2× in arena scoring · 3 of 8 products fully deliver this today

✓Babylon.js~Phaser✓PlayCanvas~Unity—Godot Engine

ai-native userRun the product headlessly / in CI for automation

Important, not disqualifying — weighs 2× in arena scoring · 3 of 8 products fully deliver this today

✓Babylon.js—Phaser—PlayCanvas✓Unity✓Godot Engine

ai-native userUse an official CLI

Important, not disqualifying — weighs 2× in arena scoring · 3 of 8 products fully deliver this today

—Babylon.js~Phaser~PlayCanvas✓Unity✓Godot Engine

ai-native userIssue scoped/least-privilege API credentials for an agent

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvasn/aUnityn/aGodot Engine

ai-native userBuild against official SDKs

Important, not disqualifying — weighs 2× in arena scoring · 4 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas✓Unity~Godot Engine

ai-native userSubscribe to events via webhooks

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvasn/aUnityn/aGodot Engine

ai-native userGet AI-generated insights and suggestions from my data inside the product

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser~PlayCanvas~Unity—Godot Engine

ai-native userSet up automations that run autonomously in the background

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser~PlayCanvas~Unity~Godot Engine

ai-native userOperate the product with natural-language commands

Important, not disqualifying — weighs 2× in arena scoring · 1 of 8 products fully deliver this today

—Babylon.js✓Phaser~PlayCanvas~Unity—Godot Engine

ai-native userExplore an interactive API reference with runnable examples

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js~Phaser—PlayCanvas—Unity—Godot Engine

ai-native userDownload a machine-readable API spec (OpenAPI or equivalent)

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js~Phaser—PlayCanvas—Unity—Godot Engine

ai-native userRely on versioned APIs with a documented deprecation policy

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser—PlayCanvas—Unity—Godot Engine

ai-native userTest against a sandbox environment without touching production data

Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser~PlayCanvas—Unity—Godot Engine

ai-native userAn agent can drive the editor and project programmatically — create scenes and nodes, edit properties, trigger builds — through a documented scriptable interface

Core requirement — weighs 3× in arena scoring · 3 of 8 products fully deliver this today

~Babylon.js✓Phaser✓PlayCanvas✓Unity~Godot Engine

ai-native userLLM-generated code mostly works on the first try — stable, well-documented APIs with abundant public examples the models have seen

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js~Phaser~PlayCanvas—Unity~Godot Engine

ai-native userAn official AI assistant inside the engine helps with engine tasks — generating scripts, answering API questions, scaffolding scenes or assets

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js~Phaser~PlayCanvas~Unity—Godot Engine

game developerRun ML models inside the game — an official inference runtime for on-device model execution

Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhasern/aPlayCanvas—Unity—Godot Engine

technical artistStandard interchange formats — glTF, FBX, USD — import cleanly

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser—PlayCanvas—Unity—Godot Engine

technical artistAsset import is automatable — import hooks, presets, and pipeline scripts process incoming assets without hand-clicking each one

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser~PlayCanvas~Unity~Godot Engine

game developerA large asset store or package ecosystem gives me ready-made models, tools, and plugins

Important, not disqualifying — weighs 2× in arena scoring · 2 of 8 products fully deliver this today

~Babylon.js—Phaser—PlayCanvas✓Unity✓Godot Engine

ai-native userDefine rules that trigger actions automatically on events

Core requirement — weighs 3× in arena scoring · 1 of 8 products fully deliver this today

~Babylon.js—Phaser—PlayCanvas~Unity—Godot Engine

ai-native userPerform bulk operations across many items at once

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js~Phaser~PlayCanvas~Unity~Godot Engine

ai-native userSchedule recurring jobs or workflows

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhasern/aPlayCanvas—Unityn/aGodot Engine

ai-native userVersion, review, and roll back my automations

Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser~PlayCanvas—Unity—Godot Engine

game developerThe engine ships a modern production 3D renderer — PBR materials, global illumination or baked lighting, shadows, post-processing

Core requirement — weighs 3× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser—PlayCanvas~Unity—Godot Engine

game developer2D is a first-class workflow — sprites, tilemaps, 2D physics — not a 3D afterthought

Important, not disqualifying — weighs 2× in arena scoring · 2 of 8 products fully deliver this today

~Babylon.js✓Phaser—PlayCanvas~Unity✓Godot Engine

game developerProfile and scale — a real profiler, plus data-oriented paths (ECS, jobs, instancing) when scenes get heavy

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser—PlayCanvas—Unity—Godot Engine

game developerBuilt-in physics — rigid bodies, collisions, raycasts — works out of the box

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

!Babylon.js~Phaser~PlayCanvas—Unity—Godot Engine

technical artistA full visual editor — viewport, inspector, prefabs/scene composition — is the primary way to build levels

Core requirement — weighs 3× in arena scoring · 3 of 8 products fully deliver this today

~Babylon.js~Phaser~PlayCanvas✓Unity✓Godot Engine

game developerExtend and automate the editor itself — custom tools, editor scripts, plugins that manipulate scenes and assets programmatically

Core requirement — weighs 3× in arena scoring · 4 of 8 products fully deliver this today

—Babylon.js~Phaser✓PlayCanvas✓Unity✓Godot Engine

studio leadThe project format and tooling play well with version control and multi-person teams — mergeable scenes, diffable text formats, or built-in collaboration

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser!PlayCanvas~Unity—Godot Engine

game developerBuild and export the project from the command line, headless, in CI — no human clicking an editor

Core requirement — weighs 3× in arena scoring · 3 of 8 products fully deliver this today

~Babylon.js—Phaser~PlayCanvas✓Unity✓Godot Engine

game developerGame logic runs headless on servers — a dedicated-server or server-runtime build without rendering

Important, not disqualifying — weighs 2× in arena scoring · 1 of 8 products fully deliver this today

~Babylon.js—Phaser—PlayCanvas✓Unity~Godot Engine

game developerTests run headlessly — unit and integration tests of game code execute in CI against the real engine

Important, not disqualifying — weighs 2× in arena scoring · 1 of 8 products fully deliver this today

✓Babylon.js—Phaser—PlayCanvas~Unity~Godot Engine

studio leadThe license is permissive with no royalties or per-install fees — I keep what my game earns

Core requirement — weighs 3× in arena scoring · 6 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas!Unity✓Godot Engine

game developerRead and modify the full engine source when I hit a wall

Important, not disqualifying — weighs 2× in arena scoring · 7 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas—Unity✓Godot Engine

studio leadThe pricing and license terms have a track record of stability — no retroactive changes that reprice games already shipped

Important, not disqualifying — weighs 2× in arena scoring · 3 of 8 products fully deliver this today

✓Babylon.js—Phaser—PlayCanvas—Unity✓Godot Engine

studio leadThe project's governance and funding are transparent — a foundation, published finances, or a public roadmap I can plan against

Differentiator, not a dealbreaker — weighs 1× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser—PlayCanvas—Unity—Godot Engine

ai-native userExport all of my data in open formats and leave

Core requirement — weighs 3× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser~PlayCanvas—Unity~Godot Engine

ai-native userSelf-host the core product

Core requirement — weighs 3× in arena scoring · 5 of 8 products fully deliver this today

✓Babylon.js✓Phaser!PlayCanvas~Unity✓Godot Engine

ai-native userDo everything through the API that I can do in the UI

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js~Phaser~PlayCanvas~Unity~Godot Engine

ai-native userRead the product's source under an open license

Important, not disqualifying — weighs 2× in arena scoring · 6 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas—Unity✓Godot Engine

studio leadOne project exports to desktop, mobile, and (directly or via partners) consoles

Core requirement — weighs 3× in arena scoring · 2 of 8 products fully deliver this today

~Babylon.js~Phaser—PlayCanvas✓Unity✓Godot Engine

web developerMy game runs in the browser with a reasonable payload — WebGL today, and a credible WebGPU story

Important, not disqualifying — weighs 2× in arena scoring · 2 of 8 products fully deliver this today

~Babylon.js~Phaser✓PlayCanvas—Unity~Godot Engine

web developerThe engine installs from a package registry into my existing toolchain — a library I import, bundle, and tree-shake like any dependency

Important, not disqualifying — weighs 2× in arena scoring · 4 of 8 products fully deliver this today

✓Babylon.js✓Phaser✓PlayCanvas—Unity—Godot Engine

ai-native userPrevent my data from being used to train AI models

Core requirement — weighs 3× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvas—Unityn/aGodot Engine

ai-native userChoose where my data is stored (region/residency)

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvas—Unityn/aGodot Engine

ai-native userControl data retention and deletion

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.jsn/aPhaser—PlayCanvasn/aUnityn/aGodot Engine

ai-native userOpt out of telemetry and usage tracking

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

n/aBabylon.js—Phaser—PlayCanvas—Unity—Godot Engine

game developerThe primary scripting language is productive and fully exposes the engine API, with a debugger behind it

Core requirement — weighs 3× in arena scoring · 2 of 8 products fully deliver this today

✓Babylon.js~Phaser~PlayCanvas~Unity~Godot Engine

game developerThe edit-run loop is fast — hot reload or near-instant preview after a script change

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

~Babylon.js—Phaser~PlayCanvas—Unity~Godot Engine

technical artistBuild gameplay logic with visual scripting without writing code

Important, not disqualifying — weighs 2× in arena scoring · no product fully delivers this yet

—Babylon.js—Phaser—PlayCanvas—Unity—Godot Engine