When learning and building on Ethereum, deploying to the mainnet is expensive if you are constantly improving and debugging your work.
So, for this hackathon, all the components are deployed onto various testnets, and the SHA-365 gradually increases the complexity, by adding some missions on different testnets.
For example, our DayKeeper contract has admin options that allow 25 hour days. Currently, Chainlink Keepers is only available on the Kovan Testnet and other Mainnets.