Sparks
Sparks pay for the built-in AI.
Arcwright is free. Sparks are only for the AI that's built into it. If you'd rather use your own AI app or API key, you never need them.
Founding 100: the first 100 accounts get 200 free Sparks, about 25 building steps with Claude Opus 5.5 · left. How to claimClaim yours →
How they work
- One Spark buys about $0.01 of AI at Arcwright's price. Each request is charged for what it actually used, and the app shows the cost under every reply.
- Claude Opus 5.5 is the recommended model for building. A typical building step (read the scene, plan, edit, check) is around 8 Sparks. Claude Sonnet 5.5 builds about twice as much per Spark. These are estimates; the cost under each reply is the real number.
- Sparks you buy never expire. They're only for AI in Arcwright: you can't cash them out, move them to someone else or spend them anywhere else.
- You never need Sparks. Connect Claude Code, Codex or any MCP app, or your own API key, and build for free on our side.
Packs
| Pack | Price | Building steps with Opus 5.5 (estimate) |
|---|---|---|
| 500 Sparks | $4.99 | about 62 |
| 1,100 Sparks | $9.99 | about 137 |
| 2,800 Sparks | $24.99 | about 350 |
| 5,700 Sparks | $49.99 | about 712 |
| 11,500 Sparks | $99.99 | about 1,437 |
| 28,750 Sparks | $249.99 | about 3,593 |
| 57,500 Sparks | $499.99 | about 7,187 |
Launch bonus: from October 17 to November 16, 2026, your first pack gets up to 20% extra Sparks, as shown in the app. Prices are before tax; Stripe adds sales tax or VAT at checkout where it applies and shows it before you pay. A new account's first purchase can be up to $99.99.
Bundles
| Bundle | Sparks | Price | Also unlocks |
|---|---|---|---|
| Starter Kit | 2,800 Sparks | $24.99 | Premium menu theme pack, 2 game templates |
| Founder Bundle (launch only) | 5,700 Sparks | $49.99 | Founder badge, all premium kits, premium menu theme pack, beta updates |
| Creator Bundle | 11,500 Sparks | $99.99 | All premium kits, Founder badge, beta updates |
Arcwright Pro
A monthly plan with Sparks every month, premium kits, templates and theme packs, beta updates, priority feedback and team seats. Founder prices are for accounts made before December 31, 2026 and stay yours while you keep the plan. Annual plans cost ten months.
| Plan | Founder price | Regular price | Sparks a month | Seats |
|---|---|---|---|---|
| Pro | $19/month | $24/month | 1,000 | 3 |
| Builder | $49/month | $61/month | 3,500 | 3 |
| Studio | $99/month | $124/month | 7,500 | 10 |
| Studio Max | $499/month | $624/month | 40,000 | 25 |
Monthly Sparks are spent before bought Sparks, and what's left of them expires at your next renewal. Founder Studio Max has 10 places.
Refunds
Unused Sparks can be refunded within 14 days of buying them. Sparks you've already spent can't be. If you used part of a pack, you get back the unused share. Cancel Pro any time in Manage subscription: it stays on until the end of the period you paid for, and you aren't charged again.
Start building today.
Arcwright is free. Download it, describe your game, and watch Claude Opus 5.5 build it in front of you.
First 100 accounts get 200 free Sparks · left
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