Grounded 2 features a massive, open, explorable world that has some interesting use of day-to-day objects. One of them is a Briefcase at the Picnic Table region that contains a lot of free loot.

If you want to open the briefcase in Grounded 2, you need the briefcase code, a two-part set of numbers that pops the lid and lets you explore inside. There's not all that much to see, but there is ...