Use this if you want an obby with a kill part in Roblox Studio (spawn a part, then go to the explorer. Go to Workspace and click the plus sign next to "Part", search for "Script", click script, and a script saying print("Hello World") will pop up. Delete this, and type this script.); Use this if you want it to rain parts (explorer -> ServerScriptService, click the plus sign next to ServerScriptService, search for "Script", click script, and a script saying print("Hello World") will pop up. Delete this, and type this script.)
Problems? Just say so in the comments.