You may use sprites, with their animations, as they are contained in the asset (sprites location “Flappy Fish UI” --> ”PNG”). You may also use ready game objects with or without their locations. To use them, you’ll need to have a game controller, which you can add from the panel bar.

Note: “Game UI” menu element will automatically be added to the "Components" panel bar menu when you import an asset into your project.

“Game controller” game object has 3 scripts attached to it:

“Game controller” script controls events during the game, you may change scroll speed from there.
“Column Pool” script creates random heightened columns during the game. You may change it to get the difficulty level of your game.
“Coin Pool” script randomly creates recourses during your game, using prefabs.

To use fish animations just access the Fish script, which is attached to the fish game object, and use flip() or die() animations. Select FIsh holder clone element’s child and you can see “FishScript.cs” and you can access fish animations from there, as the functions that are playing them are public.