"create a rewind feature that captures the player's movements then when rewinding cycles through the players movements. also make it so that the time rewinding, speed rewinding, and the key to activate rewinding is configurable"

-- server script 
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local rewindTime = 10 -- time in seconds to rewind, configurable
local rewindSpeed = 1 -- speed of rewind, configurable

local playerPositions = {}

local function capturePlayerPosition(player)
    local character = player.Character
    if character then
        local humanoidRootPart = character:FindFirstChild("HumanoidRootPart")
        if humanoidRootPart then
            if not playerPositions[player.UserId] then
                playerPositions[player.UserId] = {}
            end
            table.insert(playerPositions[player.UserId], humanoidRootPart.Position)
            if #playerPositions[player.UserId] > rewindTime * 60 then -- assuming 60 FPS
                table.remove(playerPositions[player.UserId], 1)
            end
        end
    end
end

local function rewindPlayerPosition(player)
    local character = player.Character
    if character then
        local humanoidRootPart = character:FindFirstChild("HumanoidRootPart")
        if humanoidRootPart and playerPositions[player.UserId] and #playerPositions[player.UserId] > 0 then
            humanoidRootPart.CFrame = CFrame.new(playerPositions[player.UserId][#playerPositions[player.UserId]])
            table.remove(playerPositions[player.UserId])
        end
    end
end

RunService.Heartbeat:Connect(function()
    for _, player in pairs(Players:GetPlayers()) do
        capturePlayerPosition(player)
    end
end)

game.ReplicatedStorage.Rewind.OnServerEvent:Connect(function(player)
    for i = 1, rewindTime * rewindSpeed do
        rewindPlayerPosition(player)
        task.wait(1/rewindSpeed)
    end
end)

-- client script 
local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local player = Players.LocalPlayer

local rewindKey = Enum.KeyCode.R -- key to activate rewind, configurable

local function rewind()
    game.ReplicatedStorage.Rewind:FireServer()
end

UserInputService.InputBegan:Connect(function(input)
    if input.KeyCode == rewindKey then
        rewind()
    end
end)