One page to compare the whole picture

Game engine
comparison guide

Compare Unity, Unreal Engine, Roblox, and Godot with the same layout as the Japanese guide. Start with the overview table, then open a focused comparison page.

Best first engine

Start with the decision points that matter most for a first project.

Mobile route

Compare phone workflow, optimization weight, and the Roblox app path.

2D focus

Check which engine feels quickest for UI, scenes, and lightweight 2D projects.

3D focus

Compare visual ambition, hardware needs, and learning cost before choosing.

Comparison topic

Comparison topic	Unity	Unreal Engine	Roblox	Godot
Best for first-time learners	Strong tutorials and broad beginner coverage.	Possible, but best if 3D visuals are a major goal.	Very practical when you want to publish quickly.	Friendly and lightweight, especially for 2D starters.
Main language / logic style	C#	Blueprint and C++	Luau	GDScript and C#
2D suitability	Good long-term option with mature tools.	Can do 2D, but not its clearest strength.	Simple 2D-like UI work is possible; dedicated 2D is limited.	One of the easiest engines to recommend for 2D-focused learning.
3D visual power	Flexible across personal to commercial work.	Excellent for high-end 3D and cinematic scenes.	Good for social 3D experiences and stylized play.	Improving steadily, but more often chosen for lighter 3D work.
Mobile workflow	A standard beginner recommendation for mobile projects.	Possible, but heavier to optimize and tune.	Naturally strong inside the Roblox app ecosystem.	Works for lighter projects, especially simple 2D ideas.
VR / XR path	Good ecosystem and many learning examples.	Strong for visually ambitious VR projects.	Not a main beginner recommendation here.	More suitable for experimentation than mainstream beginner VR production.
Official documentation depth	Large amount of official and community material.	Strong official documentation with deeper technical bias.	Clear platform docs and creator-focused help.	Readable docs with a smaller ecosystem footprint.
Publishing distance	Wide deployment options once your project is ready.	Great for serious builds, but usually a larger production path.	The closest path from learning to public release.	Good for lightweight exports and personal distribution.
Lower-spec PC friendliness	Usable on many mid-range study PCs.	Benefits the most from stronger hardware.	Reasonable for beginners on modest machines.	Usually the easiest on lighter hardware.
Marketplace / asset help	Very strong Asset Store support.	Strong Marketplace ecosystem.	Tooling is creator-platform focused rather than a classic asset market.	Smaller ecosystem, but often enough for learning and simple projects.
Good fit for small solo projects	Yes, especially if you may scale up later.	Possible, but usually chosen when visuals are worth the heavier setup.	Best if your idea belongs in the Roblox platform.	Excellent for compact solo experiments and prototypes.
Representative public games	Cuphead, Hollow Knight, MARVEL SNAP	Fortnite, Black Myth: Wukong, Hellblade II	Brookhaven RP, Blox Fruits, Adopt Me!	Brotato, Cassette Beasts, Dome Keeper