Crosschain Improves the Gaming Experience: Planet IX Integrates Connext

Crosschain Improves the Gaming Experience: Planet IX Integrates Connext

Planet IX, the most popular web3 game on Polygon, has integrated Connext to enable a better gaming experience via crosschain staking.

The Vision of Planet IX

Planet IX is a leading NFT-based space strategy game that combines Play-to-Earn and DeFi, with many other features and mechanics.

The team behind Planet IX believes in a decentralized gaming experience, where the game creators don’t have sole ownership and control of the game. Instead, players are empowered to control their gaming experience fully. The emerging possibilities of what can be created in the metaverse are one of the core drivers of interest in the game.

Use Case

A core component of Planet IX’s gaming dynamics are the Planet IX Lands NFTs. These special NFTs are created on the Ethereum blockchain, and need to be staked in order to receive rewards on Polygon, where the game runs.

Planet IX’s integration with Connext enables secure communication between the two chains, while managing the underlying crosschain infrastructure.

Planex IX players will see the benefits of the integration in 2 ways:

  1. Today: A Seamless Crosschain Experience. Players can now safely stake their NFTs on Ethereum and play on Polygon without the need to bridge as an intermediary step.
  2. In the Future: A Chain-agnostic Experience: Players no longer need to know which chain assets are on. The Connext-enabled game will abstract away the chains entirely for the player, allowing them to focus on what matters most, the game. This step will further remove barriers to accessing web3 games and bring Planet IX to an ever more mainstream audience.

How It Works

Mission Control is a staking game on Polygon, which consists of a hexagonal grid. There are two concentric rings: an inner ring where users can stake assets for free and an outer ring that costs a fixed monthly rent.

Planet IX wanted to grant users the right to stake on the outer ring free of cost, based on ownership of an ERC-1155 asset on Ethereum called Newlands Genesis. To achieve this, Planet IX built a locking contract where users can stake their Newlands Genesis in Ethereum to gain staking rights on Mission Control in Polygon. This was made possible by using Connext’s secure crosschain communication.

Each time a token is staked on Ethereum, a call is made to a provider that tells the staking contract which logic to trigger for the specific token.

In the case of Newlands Genesis, it sends calldata through Connext’s xcall containing the user’s current staked balance. This xcall is sent to “Mission Control Crosschain Services” on Polygon. A similar xcall is executed when a token is unstaked.

The receiver contract on “Mission Control Crosschain Services” updates a mapping containing the user’s balance, which Mission Control then reads. If the user has a balance, they can stake rent-free on the outer ring. If their balance falls to zero, their rewards are paused.

Why Connext

“We chose Connext as we loved the concept of xCall as a complete solution: it’s straight forward, easy to work with and troubleshoot with ample documentation.

The team from Connext was super helpful on the questions we had, and was a pleasure to work with. We will likely use xCalls more in the future, in PlanetIX and other applicarions.” — explains Henri, Integration Manager at PlanetIX.


Planet IX is at the forefront of a revolution in the virtual land strategy development space.
The success of the game (their smart contracts are constantly among the top 3 most used on Polygon) is due to a fun gameplay experience, and tokenization dynamics.

We’ll be exploring more use cases with the team to abstract the complexities that a multichain game faces, and provide the best and most rewarding experience for users.

About Planet IX

Planet IX is a leading web3 NFT-based strategy game where your goal is to restore a fallen planet to its former green-blue glory while uncovering its mysteries. The story is continuously expanding into a huge and immersive sci-fi metaverse, and the narrative is tailored towards bringing awareness of humanity’s impact on the world of today.

The Planet IX map consists of 1.6 billion PIX, all being individual NFTs that you can collect. The PIX are acquired using the ERC-20 utility token called IX Token (IXT) which was launched on November 20, 2021. Today, the game has a dedicated community and high engagement, with 190k+ UAWs and 400+ million NFTs sold to date.

As you progress in the game, you can form territories, develop new technology, raid other players, and gain ownership of in-game corporations with different functions and perks. Everything you collect has true ownership, and your mission is simple. Collect assets, use them wisely, and build the world of tomorrow.

Play | Whitepaper | Dashboard | Twitter

About Connext

Connext is a network for fast, trustless communication between chains and rollups. It is the only interoperability system of its type that does this cheaply and quickly without introducing any new trust assumptions. Connext is aimed at developers looking to build secure bridges and other natively cross-chain applications. To date, over $1.5b in transactions have securely crossed the network.

Website | Build xApps | Twitter | Discord | Crosschain Bridge