There are 100 Hidden Packages scattered throughout Vice City. Collecting these packages provides various rewards, including cash, weapons spawning at your safe houses, and eventually, a Hunter helicopter at the military base. Each package you collect adds to a cumulative reward system, making it a worthwhile endeavor for completionists and those seeking powerful weapons early on.
Finding all 100 packages can be a time-consuming task, but the rewards are significant. For every 10 packages, you unlock a new weapon at your safe houses. At 100 packages, you unlock the Rhino tank and the Hunter helicopter at Fort Baxter Air Base, making you virtually unstoppable. Use a guide or map if you're struggling to find them all. This is a long-term goal that pays off handsomely.