25 GB available space
You wake up naked on a beach to build a spear out of stone and wood. With cloth made from hemp, you make clothes and then perhaps go hunting to fortify yourself with roasted wolf meat at a campfire. A few minutes later, you'll be shot by a player who's having a blast hunting newbies.
If you're familiar with PvP-based survival adventures, then you know Rust: build a shelter as quickly as possible, make better tools, process resources into high-quality materials, and fortify your property with them to protect it from attack. You should create production chains for food and look for horses, cars, or boats to get materials faster, which are then used to make tools and weapons, including pistols, rifles and explosives, and rocket launchers. The bottom line is that fighting for survival here means fighting against hundreds of other players or groups - which always starts anew when the server is reset. On the official ones this happens monthly, on others weekly, every 14 days, or at the discretion of the respective operators.
Because PvP is the main focus, survival aspects have been reduced to a minimum, so that there is hardly any danger from flora and fauna. Rust thus stands between the complex survival trip DayZ and a Battle Royale that is almost completely limited to action. Suddenly attacking animals can cause sudden deaths, but essentially only serve as a source of fur, meat, and other raw materials. And maybe that's a good thing; after all, the bears, deer, and wolves behave stupidly when they simply stay in place under fire or calmly trudge across the ocean floor several meters below the surface.
Rust is a very rudimentary shooter with boring survival elements. At least: The construction and expansion of your base are entertaining, are supported by motivating character development, and allows the creation of reasonably complex systems for supply, defense, and material processing. The fact that you can offer your products in self-built stalls is just as great as the possibility to talk to other players. If you join a group of experienced players or go to servers that prevent the intended constant fire, you will have fun with Rust.