How do I stop my little brother from being addicted to Roblox?

[BuildistGuard]

DO NOT SAY "Let him have fun" or "You don't!", tell me on how to stop his addiction to roblox. Roblox takes over his life, he does his homework and plays for the entire day. He throws a temper tantrum if the parents or I tell him to get off the computer. He is only a little kid and I am a preteen, he is in 1st grade and I'm in 7th grade. When he plays roblox, he won't get off it, he won't even let me do my homework on the computer or my parent's work on the computer, how do I stop him from being so addicted?! He won't listen, he also crys when I tell him when to play, which he thinks it is too long.

[Fat_Sacks]

You already posted thIs bro.
Get rid of Roblox or add restrictions onto the computer.