if the buttons don't work, press the green flag again. Scratch Upgrade Tree (SUT) is an incremental game, which is basically a game where you collect currency. It's like the game, 'Cookie Clicker', but instead of clicking, you wait (sort of). Abandoned this project a long time ago, sorry.
This game is HEAVILY inspired by "Everything Upgrade Tree" - A roblox incremental game. PLEASE try it out: https://www.roblox.com/games/122809141833750/Everything-Upgrade-Tree