🎮 Game Design & Interactive Media · interactive puzzle design

Enigma Meter · x402

A cryptographically-linked puzzle engine where solving or accessing the next stage requires a 0.01 USDC micro-settlement. Creators earn per-solve royalties, and players pay-per-hint or pay-per-level using X402-gated interactions. No subscriptions, just friction-less progression via signed HTS transfer intents.

Hedera testnet + x402 paywall· x402 native
Section · Onchain

The primitive.

full primer →

Access to the interactive puzzle design engine is metered with x402: 0.01 HBAR or 0.01 HTS USDC per call, paid from the embedded wallet, so game designers — or the agents working for them — pay per query and get a HashScan receipt every time.

Why this primitiveThe 'NFT ownership' model is static; X402 turns the puzzle into a metered service. By making each move or hint a 1-cent transaction, it creates a high-velocity 'micro-economy' for game designers where the financial settlement (Base tx) is the evidence of the solve.

Kernel
an x402 v2 paywall metering access at 0.01 HBAR or 0.01 HTS USDC (token 0.0.429274) per call, paid from the embedded wallet through the relay and verified by a self-hosted facilitator against the Hedera mirror node
Drives the UI as
a 'pay 0.01 HBAR or USDC to unlock' button with a live flow log and a HashScan link for every settlement
Appendix · Secrets

Required keys.

HEDERA_OPERATOR_ID
Hedera testnet account id (0.0.xxxxxx). Create and fund it free.
open ↗
HEDERA_OPERATOR_KEY
ECDSA private key for that account, from the Hedera portal dashboard.
open ↗
REOWN_PROJECT_ID
Free project id powering the HashPack pairing modal.
open ↗
HEDERA_RPC_URL
Optional. JSON-RPC relay, defaults to the public Hashio endpoint.
open ↗
PINATA_JWT
Pins images / JSON / manifests to IPFS.
open ↗

Add these in your Lovable project under Settings → Secrets before pasting the prompt below.

Appendix · Mega-prompt

The build prompt.

Paste into a fresh Lovable project. Make sure all five secrets above are set first. read the build strategy →

Loading the mega-prompt…
Appendix · Market

Market sizing.

TAM
$12.6B
Global market for casual mobile/web puzzle games and brain-training apps.
SAM
$2.4B
The estimated revenue from indie logic and puzzle games pivoting to web3-native micro-transactions.
SOM
$18M
Targeted capture of on-chain puzzle enthusiasts and Base-native treasure hunt participants.

Indicative figures for hackathon pitches — refine with your own research before raising.

See also

Adjacent entries.