A matching game is a game where you have a bunch of cards or tiles with pictures on them. The pictures are usually the same on a couple of cards, and your job is to find those pairs. When you find 2 cards with the same picture, you get to keep them and you get a point. The goal is to find all the pairs and get as many points as possible.
It's kind of like a game of memory - you have to remember where you saw certain pictures and then match them up. Sometimes there are a lot of cards, so you have to be really good at remembering which pictures are where.
Matching games are usually played by kids, but adults can play too! They can be really fun and challenging, so it's a great way to improve your memory skills too.