I have a bit of an idea about Galxe (Galaxy), asked around but couldn't find out anything, after a lot of effort finally figured out how to operate it. Binance does not have the G withdrawal mainnet, you need to withdraw from the adjacent mainnet $G as gas to claim task rewards. Claiming one task reward requires 2.5G.

I am doing Irys tasks on Galxe, the project is not very popular, the testnet has some classic mini-games, like Snake and Tetris, which are quite interesting, but it seems that they do not airdrop to testnet users, so I focus on doing Galxe tasks.

Now there are 12 tasks, except for DC which requires obtaining character tasks, the others are quite simple.