From my experience, the Royal Raffle team is ready to collaborate with other teams.
About me, I am building a similar dApp that organizes a raffle.
The dApp is named Lucky and won a prize at the last Polkadot Hackathon in the category “built a WASM dApp with ink!”.
The wasm smart contracts are ready and deployed on Shibuya and the dApp will be deployed soon in Shiden.
The dApp uses several wasm smart contracts, subquery and soon phat contracts.
By the similarity of technologies and the resemblance of our dApps, a partnership was born between our two teams.
The two teams will collaborate together. The Royal Raffle team firstly will build on Astar evm, the Lucky team will built with ink!.
Next, each team will bring their experience to build best dApps. 
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