Overview

WEB3 INVADERS is a retro shooter built for the Alchemy University Ethereum Bootcamp. It plays like classic Space Invaders, then layers in on-chain items and a simple marketplace.

Wallet & network: use a wallet on Polygon Amoy Testnet. The game is best on a desktop/laptop (not optimized for small screens).

Features

Playable Space-Invaders-style game with 3 levels.
Customize your spaceship and projectiles via NFTs.
In-game marketplace with a custom smart contract to buy/sell items.

Security disclaimer & improvements

This is a fun/learning project and needs hardening before real-world use.
On-chain functions are permissive: leveling and item ownership can be spoofed without stricter checks.
Code readability, TypeScript types, and unit tests to be improved.

Credits

Alchemy, for the in-depth smart contract tutorials.
freeCodeCamp full-stack web3 video.
MidJourney, for art assets (edited in GIMP; see project raw folder).
AWS, S3 & CloudFront hosting automated with Terraform.

Tech stack

TypeScriptJavaScriptSolidityViteEthers.jsOpenZeppelinHardhatAWSS3CloudFrontTerraform

Architecture overview

Navigation tips

Wheel to zoom. Cursor stays on the same point.
Drag (left or middle mouse) to pan.
Double-click to zoom in at the cursor.
Shift + Double-click to zoom out.
Keyboard: +/− zoom, 0 fit, 1 1:1, arrow keys to pan.