As a Christian I've often wondered how I could make a game that would glorify God, but as others have already said, most ideas are incredibly cheesy and/or preachy.
I think the most interesting projects would be ones that are recreations: For example, a Biblically accurate Garden of Eden environment made in Unreal Engine 5 would be amazing to walk around in. Not much actual gameplay, but that wouldn't be necessary as evidenced by other developers who do "walking simulators".
Four years ago I came across this book: "Introduction to C# with Unity 3D. The Exodus Adventure" by Kris Murray and Philip Conrod, ed. BibleByte Books (www.BibleByteGames.com), Maple Valley, Washington, 2017. I'm not religious but was interested in the way they showed how to build a game from start. It's a point-and-click adventure that tells the story of the Exodus from Egypt. It provides all (beautiful) assets and explains meticulously all the scripts needed. I don't know if it's still available in commerce, but I found it useful for game development.
P.S. I see just now that this game has been recently published on Steam!
