Best prompt-to-game AI builders (2026)
Picks based only on what each vendor's own pricing and terms pages say (checked 2026-10-15): can you ship it, what it costs, and whether your agent can call it. We don't rank by output quality.
Free tier with commercial releases
GDevelop, Makko AI, Summer Engine
GDevelop is open source (companies over $50k/yr revenue must use Pro). Makko's FAQ says commercial releases are allowed. Summer's AI Terms assign generated content to you (publishing on Summer's platform with Modding enabled triggers a Network Share).
Commercial rights only on higher tiers
Rosebud's terms make the free version personal and non-commercial only. The pricing page lists commercial rights from 10x Dev ($30/mo) and code download from Pro ($50/mo).
All tracked options
| Tool | Free tier | Paid price (as shown) | Commercial licence | API / MCP | Checked |
|---|---|---|---|---|---|
| GDevelop Prompt-to-game builders | Free: open-source engine, 200 AI credits/week, Android/desktop publishing once per day | Silver $7.99/mo; Gold $13.99/mo; Pro $39.99/mo | Free: Open-source engine; free use allowed (Pro required for companies >$50k/yr revenue) Paid: Same | unverified | 2026-10-15 price: verified licence: partial |
| Makko AI Prompt-to-game builders | Free: 150 art budget/month and 70 chat requests/week | Starter $20/mo (1,000 credits); $50/mo (3,000); $100/mo (6,000); $200/mo (13,000) | Free: FAQ: you retain full ownership, commercial releases allowed (not plan-limited in FAQ) Paid: Same; no revenue share or royalties | unverified | 2026-10-15 price: verified licence: verified |
| Summer Engine Prompt-to-game builders | Free app: editor, manual export, MCP connection to your engine | Pro $20/mo; Pro+ $60/mo; Ultra $200/mo | Free: AI Terms s.4.1: Summer assigns to you its rights (if any) in Generated Content; terms do not differ by plan Paid: Same; subject to the platform licence and third-party rights | MCP & CLI | 2026-10-15 price: verified licence: verified |
| Rosebud AI Prompt-to-game builders | Newbie (free): 8,000 credits/week, hosted games, remixable | Indie Dev $15/mo; 10x Dev $30/mo; Pro $50/mo; Scale $100/mo | Free: Terms: 'The free version of the Services is for personal, non-commercial use only'; monetizing free-version UGC is prohibited Paid: Terms: paid users may use UGC commercially; pricing page lists 'Commercial rights' from 10x Dev ($30/mo); code download from Pro ($50/mo) | unverified | 2026-10-15 price: verified licence: verified |
Compare cost per asset in the calculator · Commercial-use answers · Ship with no attribution
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