lol you all are funny. I promise this is absolutely attainable! This is just the unfinished basement in our house we are renting. Everything was pretty affordable; wall coverings are $10
Amazon tapestries, lighting is off-brand LEDs, floors are ROSS carpets. Arcade games were bought around Black Friday for $200-$300 each, foosball table is a cheap $220 model from wayfair, poker table is a barrington. The slots were the most expensive purchases but if you stalk facebook marketplace you can get deals. There are people on here with more tied up in a single set of Paulsons than this whole basement ha.
The only exception to this is the sound system - I’ve spent a lot of time and money on that.