Ark: Survival Evolved Base Building. You can combine parts such as doors, windows, foundation, and more to get yourself a complex, multi-leveled building. Moreover, you can customize the buildings to suit your liking. As for their uses, buildings tend to provide a safe house for yourself and your resources.
(Even that is more than what many retirees have actually saved. The average retirement savings is about $104,000 for households with members ages 55 to 64 and $148,000 for households with members 65 to 74 years old, according to an analysis by the Government Accountability Office.).
If you are forced to take out more than $40,000 adjusted for time during your retirement, you are tempting fate and relying on luck to get you by. So, if you want at least $40,000 per year, $1 million is really the least amount of money, the bare minimum, you should have before you launch into retirement.