Grenades explode as soon as they hit anything. There are eight types of Gear Mod upgrades that can be unlocked by earning gears when completing various challenges.

Land Nitrous I: This Land Vehicle mod is invaluable if you want to earn more gears when completing Land Races - plus, a nitrous boost never hurts when trying to escape the DRM.

Reel-In Boost: While the Wingsuit Courses may be difficult, earning this Traversal Mod will allow Rico to gain more altitude and cover a greater distance in less time.

More Explosives: Just like with grenades, it always helps to have more things that go 'boom.' Simply collect 3 gears from any of the Crash Bomb challenges to increase your active GL-64 count by one.

That said, you can never have too many grenades.

More Grenades: This upgrade, which increases Rico's grenade capacity, is another that can be obtained early on.

Glass Grenades: This is an easy get since it only requires three gears in a Destruction Frenzy challenge, but these grenades that explode on impact make combat much easier during large firefights.

The Scrapyard Scramble challenges are spread out across Medici, so consider using our Interactive Map to find them. That said, as powerful as Rico's starting grappel is, the Tether Upgrades will allow him to do a lot more damage without using any weapons.

Tether Mods: Rico's signature grappling hook is the focal point of many of JC3's mechanics.

Here are the mods we suggest focusing your efforts on unlocking:

For example, giving your boats the ability to perform jumps may be fun, but that won't be particularly useful during your liberation of Medici. While there are dozens of mods and upgrades to unlock, players may want to focus on improving some abilities over others.

Just cause 3 best mods