In Concept art & 2D assets, Retro Diffusion ranks #1 and Midjourney ranks #9. No independent quality tests found. Ranked on game-dev fit: commercial use allowed; Godot, Unity, Unreal integrations; API and official MCP server.
Commercial use: Midjourney: commercial on paid plans only terms. Retro Diffusion: commercial use allowed terms.
Free plan: Midjourney: paid only (No free plan stated: "All Midjourney plans are subscriptions") pricing. Retro Diffusion: free trial or credits only (Free starting balance for new accounts) pricing.
Shipping free-plan output in a paid game: only Retro Diffusion allows it, per their published terms.
API and MCP: Midjourney: API not stated by vendor, MCP not stated by vendor. Retro Diffusion: public API, official MCP server.
Engine integrations stated by the vendor: Midjourney: none stated (standard file export). Retro Diffusion: Godot, Unity, Unreal.
AI image (and video) generation on the web and Discord; used for concept art, key art and 2D game images. Four subscription plans, no free plan stated.
Pixel-art-specific image models for sprites, tiles, tilesets and animations, plus low-poly 3D model generation with export for Godot, Unity and Unreal. Also sells an Aseprite extension.
Verdict
For concept and key art on a subscription; you own what you make on any plan, but studios over US$1M a year need Pro or Mega, and images are public unless you pay for Stealth.
For pixel-art devs who want pay-per-image pricing with no subscription; the site says all output is yours for commercial use.
Tasks●
Concept art & 2D assets
Concept art & 2D assets, 3D model generation
Engines●
Any (standard file export / engine-agnostic)
Godot, Unity, Unreal
Free plan●
Paid only No free plan stated: "All Midjourney plans are subscriptions"
Free trial or credits only Free starting balance for new accounts
Pricing
Basic US$10/month, Standard US$30, Pro US$60, Mega US$120 per month; annual billing US$96, US$288, US$576 or US$1,152 a year (20% off). Extra fast GPU time US$4/hr. source
Pay per generation from a prepaid balance: images from US$0.03 (RD Fast), US$0.06, US$0.18 (RD Pro); animations from US$0.07 per clip. New accounts get a free starting balance. source
Export formats
Not stated by vendor
Not stated by vendor
Commercial use●
Commercial on paid plans only Terms of Service (effective 27 May 2026): you own the Assets you create; ownership persists if you later downgrade or cancel. A company (or employee of a company) with more than US$1,000,000 a year in revenue must be on Pro or Mega to own its Assets. Upscales of other users' images stay theirs. Content is publicly viewable and remixable by default (Stealth Mode on Pro/Mega only). Assets are provided AS IS, with no non-infringement warranty, and you indemnify Midjourney. source
Commercial use allowed Official FAQ: "Everything you generate is yours, for personal and commercial projects alike." source
Revenue share / caps●
Company revenue over US$1,000,000/year requires Pro or Mega; no revenue share stated
Not stated by vendor
API●
Not stated by vendor. No public API stated; the Terms say you may not use automated tools to access the Services or generate Assets source
Rows marked ● differ between the two tools. Licence badges: green = commercial use allowed (including any free plan or trial), amber = paid plans only, restricted, or allowed but with no free plan, red = not allowed, grey = not stated by vendor or not applicable. Read the vendor's current terms before you ship.
