Okay kiddo, do you know what a videogame is? It's when you play a game on a screen like a TV or a computer.
Now, there are different companies that make these games and the machines you play them on are called consoles. Some popular ones are Nintendo, PlayStation and Xbox.
These companies try to sell more consoles than their competitors and get more people playing their games. It's kind of like a competition, just like how you might try to win a race or a game of tag with your friends.
When people talk about "console wars," they mean this competition between the different companies. People might argue about which console is the best, or which one has the coolest games, or which one is the easiest to use.
Sometimes, companies will even make ads that make fun of their competitors to try and get people to buy their console instead. It's like when someone at school tries to convince you to play their game instead of your own.
So, in short, console wars are when different companies try to sell more consoles and get more people playing their games by competing with each other.