Tycoon buttons help

Assuming you’re using a different script for every single button, I would use a module to Tween. If you created a TweenHandler module, you could create one method to tween everything.

Setup

local TweenHandler = {}

--// Services
local TweenService = game:GetService("TweenService")

--// Functions
function TweenHandler:TweenPart(part) --// Tween given instance
      local Tween = TweenService:Create(part, TweenInfo.new(--[[Whatever tweeninfo you want for all of them]]--, {--[[Whatever tween value you are using--]]
end

return TweenHandler

This module would fire the same exact tween for all of your buttons. As long as it’s required.

Usage

--// Modules
local TweenHandler = require(game.ReplicatedStorage.TweenHandler)

--// Constants
local CURRENT_PART  = game.Workspace.p1
local NEXT_PART = game.Workspace.p2

--// Event handler
CURRENT_PART.Touched:Connect(function(hit)
      if game.Players:GetPlayerFromCharacter(hit.Parent) then
           CURRENT_PART:Destroy()
           TweenHandler:TweenPart(NEXT_PART)
      end
end)

This is a super rough example, but it should get the point across of how to make the fade you want.