Blockchain games are video games that are built on blockchain technology. Blockchain is a distributed and decentralized ledger technology that ensures secure and transparent transactions without the need for intermediaries. In blockchain games, the technology is used to manage game assets, transactions, and rules.

One of the key features of blockchain games is the use of non-fungible tokens (NFTs), which represent unique in-game assets such as virtual items, characters, and weapons. These NFTs can be owned, traded, or sold, making them valuable and sought-after by players.

Blockchain games also often feature a play-to-earn model, where players can earn cryptocurrency or other rewards by playing the game, completing quests, or contributing to the game's development. This has led to the rise of a new economy around blockchain games, with players able to earn real money by playing their favorite games.

Blockchain games offer several benefits over traditional video games, including increased security, transparency, and ownership of in-game assets. They also allow for new game mechanics and revenue models that were previously impossible in traditional games.

Here are some popular blockchain games:

1. Axie Infinity: Axie Infinity is a popular blockchain game that allows players to collect, breed, and battle creatures called Axies. The game has gained widespread popularity due to its play-to-earn model, where players can earn cryptocurrency by playing the game.

2. Decentraland: Decentraland is a virtual reality platform that uses blockchain technology to enable players to create, experience, and monetize content and applications. Players can buy virtual land and develop it as they please, with the blockchain ensuring that ownership and transactions are secure and transparent.

3. Gods Unchained: Gods Unchained is a blockchain-based trading card game that allows players to collect and battle with unique digital cards. Each card is represented by an NFT, which can be traded or sold on various marketplaces.

4. The Sandbox: The Sandbox is a virtual world that allows players to create, share, and monetize content using blockchain technology. Players can buy virtual land, develop it, and create games and experiences that can be monetized using the game's native cryptocurrency.

5. Splinterlands: Splinterlands is a blockchain-based trading card game where players collect and battle with unique digital monsters. Each monster is represented by an NFT, which can be traded or sold on various marketplaces. The game has a play-to-earn model, where players can earn cryptocurrency by playing and winning battles.

6. My Neighbor Alice: My Neighbor Alice is a blockchain-based multiplayer game that allows players to build and explore a virtual world. The game has a play-to-earn model, where players can earn cryptocurrency by completing quests and building on their virtual land.

These are just a few examples of popular blockchain games, as the industry is constantly evolving and new games are being developed all the time.