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Here comes the fun! Time to build your own dApp. Here you will find a list of ideas to implement in any of the smart contract environments.

Enter Community​

  • Join Astar Discord and Post GM.
  • Follow Twitter.
  • Create an account on Stack Exchange.
  • Create an account, Post Hi on Forum (A thread just for this purpose).
  • Subscribe to Astar Newsletter.

Ideas to build​

These ideas can be implemented as EVM smart contracts.

Pool Together​

Explore this project and build your own version.

Voting​

Develop a smart contract which allows people to vote The rules are:

  • Contract owner initializes a set of candidates (2-10).
  • Lets anyone vote for the candidates.
  • Each voter is limited to only one ote (per address).
  • Displays the vote totals received by each candidate.

Tamagotchi​

Create a virtual pet smart contract, allowing users to create, interact with, and trade virtual pets securely and transparently on the blockchain. Create Tamagotchi: The smart contract should allow users to create a Tamagotchi object with attributes such as hunger, happiness, and energy levels.

  • Interact with Tamagotchi: Users should be able to interact with the Tamagotchi object by calling functions to modify its attributes, such as "feed", "play", and "rest".
  • Implement Rules: The smart contract should enforce rules and restrictions to prevent users from overfeeding, neglecting, or exploiting the Tamagotchi object.
  • Track Lifespan: The smart contract should track the Tamagotchi object's lifespan and trigger events such as death, rebirth, or evolution based on its age, level, and behavior.
  • Support Multiple Tamagotchis: The smart contract should support multiple Tamagotchi objects, each with its own set of attributes and state, and allow users to own, trade, or exchange them.

Charity Raffle​

Develop a smart contract which allows people to enter a charity raffle. The rules are:

  • A user can send in anywhere between 0.01 and 0.1 tokens.
  • A user can only play once.
  • A user is added to the pool with one submission, regardless of money that was sent in.
  • There can be a maximum of 2 winners.
  • The raffle must go on for 15 minutes before a draw can be initiated, but the 15 minute countdown only starts once there are at least 5 players in the pool.
  • Anyone can call the draw function at any time, but it will only draw a winner when the 15 minute timer has expired.
  • The draw function can be called twice for a maximum of two winners.
  • The winners get nothing (it’s a raffle for a real world item, like a t-shirt, so ignore on-chain effects of a win) but they need to be clearly exposed by the contract, i.e. the list of winners has to be a public value dapps and users can read from the contract.
  • The collected money from the pot is automatically sent to a pre-defined address when the second winner is drawn.

Happy coding!