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How to Use mederu GACHA
A complete guide to minting, collecting, and creating gacha-style NFTs on Tezos.
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What is mederu GACHA?
mederu GACHA is a gacha-style NFT minting platform built on the Tezos blockchain.
Artists upload a collection of artworks, and collectors mint a random piece — just like a gacha machine.
Each NFT is unique, securely shuffled on the server, and minted on-chain via your Tezos wallet.
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Step 1 — Connect Your Wallet
Click "Connect Wallet" in the top-right corner.
mederu GACHA supports Beacon-compatible wallets such as Temple, Kukai, and others.
Make sure you have enough XTZ to cover the mint price + network fees (~0.01–0.05 XTZ gas).
- ◆Temple Wallet is recommended for beginners.
- ◆You can use Kukai mobile for a smooth experience.
- ◆Ghostnet (testnet) is available for testing.
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Step 2 — Find a Gacha Drop
Browse the homepage to find active gacha drops (marked with 🟢 LIVE).
Each card shows the collection name, creator, mint price, and how many tokens remain.
Click a card to visit the mint page.
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Step 3 — Mint Your NFT
On the mint page, choose how many tokens to mint (1–5 per transaction).
Click "MINT" and approve the transaction in your wallet.
After confirmation, your new NFT will be revealed with a flip animation!
The token is randomly assigned from the shuffle — you never know what you'll get.
- ◆Higher supply drops have more variety.
- ◆Some drops feature limited rare traits — check the collection description.
- ◆Each mint is on-chain and permanent on Tezos.
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Step 4 — View Your Collection
Visit your Profile page to see all your minted NFTs.
Click any thumbnail to open a full-screen lightbox with metadata:
token name, collection, creator, description, and traits.
Your NFTs are also visible on mederu, objkt.com and other Tezos marketplaces.
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For Artists — Create a Gacha Drop
Artists with a mederu Pass can create their own gacha drops.
Navigate to the Create page, fill in your collection details, and upload your artworks.
Optionally, upload a CSV file to set custom names, descriptions, and traits per token.
Without a CSV, traits are automatically generated from layer names and file names.
You can also use the Layer Composer (mederu Pass required) to generate generative art NFTs from layered images.
- ◆Supported formats: PNG, JPEG, GIF, WebP, AVIF (max 10 MB per image).
- ◆Up to 500 images per drop.
- ◆Artworks are shuffled server-side — order is kept secret until mint.
- ◆Set royalties (default 10%) to earn from secondary sales.
- ◆Collaboration with other artists is also possible — revenues are automatically split between collaborators.
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For Artists — Custom Branded Page
After creating a drop, you can enable a fully custom branded page at /g/your-slug.
Choose your background, accent color, font, banner image, and layout.
Share this link with your community — it's your own gacha experience!
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CSV Metadata Format
To set custom metadata per token, upload a CSV file with columns:
id, name, description, tags
id: matches the image order (1-based)
name: token display name
description: about this specific token
tags: comma-separated traits (e.g. "background:sky, item:bunny")
If no CSV is provided and you use the Layer Composer, traits are auto-generated from layer & file names.
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Security & Transparency
All minting happens on-chain via the Tezos FA2 standard.
The shuffle is pre-computed server-side before the drop goes live, ensuring fairness.
NFT metadata is uploaded to IPFS before minting — permanent and decentralized.
Royalties are enforced by the smart contract, so artists always earn from resales.