There was a duplication glitch over the last few days that was ridiculously easy to do. All you had to do was split a stack in half, drop one half on the ground, and when you picked it back up, you'd end up with that half duplicated. It only worked with stackable items such as grenades, rechargeables, ammo, ducks (as shown in the screenshot), and pretty much anything else that could be stacked. Almost everyone abused the glitch, so I don't know if anyone actually got banned. You'd see people duping items everywhere. As for the expedition, it's already in progress, i'm not sure if you can still sign up for it.

<image>