Aggressive brother! What to do?

As the title implies, I have an aggressive brother.

I'm 10 years old and I enjoy playing Minecraft. He is 2 years older than me and likes to play with me and my little brother Minecraft. He's been in Minecraft many times but it has never been so bad as it is today.

We three played Minecraft in one world. We had quite good equipment and wanted to build a house by the sea. He went into the sea and found an underwater cave, into which he absolutely wanted to get in. He went in and left his equipment in a box on the mainland. He was attacked by a couple of drownings and a dolphin (he had the dolphin cut). I came to help him and killed a few. Then he died because he drowned. He respawned by his bed. The little brother had then dismantled the bed. I helped him in the cave and then he died by the dolphin. He respawned at the spawn.

He was really raging and put a thick book in my face. My little brother was then threatened with a chair but he ran away and told my grandfather. He came but my big brother disputed it. As my grandfather he called me and my little brother (imagine a very insulting word) and we ran away.

I do not know what to do! Ask for answers!

At 10, your spelling is a lot better than most users here.
If he gets aggressive while playing, then let it be easy.

Do not play with him anymore he is crazy

If he goes so far out of control of a computer game and lets it out on both of you, it's best not to play with him like that until the problem is solved.

You should also talk to your parents about it. If your big brother reacts like this when he dies in a game, he's a threat to you and your little brother. Denial does not help the big one either, if he beats you and screams out loud and so on, sooner or later your parents will get it anyway.

How is the big guy like that? Does he also play other things besides Minecraft? Is he basically aggressive when something does not suit him? Or is he otherwise a nice guy?

He is also rather aggressive and often flogs himself. He has already injured a teammate in a competition arm. Mostly he plays Call of Duty: World was ||, Fallout, Gta and The Forest

Thank you

Sadly, one can't say that about grammar (helpfull, distracted or gang - how about: helped, argued or left?).