The crossbow ingame dropped
The crossbow is a devast.io weapon that is crafted with 200 wood, 2 string and 1 shaped metal. It requires 1 skill point to unlock the crafting recipe.
Its base damage is 50, it uses crossbow arrows as ammo.
Overall, it's bullet damage and velocity is much higher than the bow, which makes it easier to aim with, but it reloads slower.
You can find crossbows and crossbow arrows in safes. Typically, you don't want to craft a crossbow, but if you need a relatively cheap and good weapon, you can try it out.