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ZacharyM, I would try to make something like "tower defense" game, or something like light version of puzzle game Gardenscapes. There are dozens of projects and genres which are pretty popular nowadays, so I would pay attention to them, and look what exact features people love to interact with. And by the way, if you will have any kind of developing problems, I can suggest you to order some outsourcing dev services and solutions from iLogos.biz game dev studio. I've heard dozens of positive recommendations about this company as a leader in game development. They have really impressive examples of their game dev solutions on their website.