Not sure whether I'm impressed, horrified or both.

https://www.gamasutra.com/blogs/CBel/20180208/308549/3D_engine_entirely_made_of_MS_Excel_formulae__Enjoy_this_Doomxls_file_.php

Very cool! I didn't think that I can use Excel and macros in this way. I'm working with Excel spreadsheet to make tables of ungrouped frequency distribution that based on statistical observations and data (you can find example on [suspicious web link deleted by moderator]]). But I understand that tables are a powerful tool and using VBA language you can solve many different assignments.