.io game development

Need a game developed from scratch but there are existing .io games that are similar to what i require for inspiration purposes. So basically a game called [login to view URL] has stopped working as the developed have decided to stop paying for the host to run the game. Now the community wants the game back so I have decided to get a developer on board to create this game again. I have no admin access to the game so do not ask for source files or what not. The specifications are to just copy the game from UI to the in game mechanics from scratch! Now if you visit the site the UI is shown but you can't play the game as its been shut down so in order for you to understand how the game works you'd need to experiment with a similar game which is [login to view URL] The functionalities and the mechanics need to be same but somewhat better as [login to view URL] was a better version of that game. In summary: 1. UI inspiration is there as [login to view URL] (ingame does not work due to it being shut down hence why im here needing the game to come back to life with obvs new name but the same UI and mechanics) 2. In game mechanics is there as [login to view URL]