Traditionals are the original game piece. There are also Multicaches where you have to find the first container to get coordinates to the next until you get to the final.
Webcam caches that take publicly owned webcams and utilizing a friend at home to take a screen shot of you at the site. Mystery/Puzzle caches require you to solve a puzzle to find the actual coordinates or figure out how to open the container once you arrive. Geocachers love to give back to the community through volunteer cleanups called CITOs or “Cache In, Trash Out” and those also count as geocaching finds when you attend.
Let’s not forget about Event geocaches! I think these may be my personal favorite kind. You throw an event at ANY location, your local coffee shop, the beginning of a trail, or a beautiful nature lookout. This is how I met the geocachers behind the containers I have found near my home. Lots are retired, some are government agents (not secret agents, just regular ones) who love to test their physical endurance and lightly train through geocaching, some are families with kids and some are couples that play the game together. You get together for a common reason and end up making amazing friendships.