Jason Rohrer lived a very minimal lifestyle before 2012, as described here: http://hcsoftware.sourceforge.net/jason-rohrer/simpleLife.ht...
We have set our yearly budget at about $9,756. Town, village, and school property taxes eat up about $1500 of this per year. After that, we have a budget of about $688 per month. We have devoted $200 of this to utilities (water, electric, and amortized heat), and $65 to telephone and Internet. You might be laughing: "No fridge, but you have DSL, huh?" Remember, I am a computer programmer. After all of these expenses, we are left with about $423 per month, which must cover food and other purchases.
His computer setup back then involved a broken Dell Inspiron 4100 with 950 MHz processor and 256 MiB of RAM: https://usesthis.com/interviews/jason.rohrer/
His game Passage is a free download from his website.