FPS (Frames per second) and Time.deltaTime are calculated in this project. Scratch maxes out at 30 FPS Time.deltaTime is used in Unity, which tells the amount of time between the current frame and the last one. This can be used in making up for lag the player is experiencing by increasing the rate at which things happen in the game relative to the game's FPS. For more information, see here: https://docs.unity3d.com/ScriptReference/Time-deltaTime.html