Koi

Game Scene:

<a href="<a href=" https:="" www.freepik.com="" free-vector="" textures-water-green-grass-ivy-leaves-game-background-vector-cartoon-seamless-patterns-top-view-sea-ocean-lake-surface-summer-lawn-wall-with-hedera-plants_21376701.htm#query="cartoon%20water%20texture&position=0&from_view=keyword"">Image" class="redactor-linkify-object">https://www.freepik.com/free-vector/textures-water-green-grass-ivy-leaves-game-b...</a> by upklyak on Freepik

Main Menu:

<a href="<a href=" https:="" www.freepik.com="" free-vector="" swimming-pool-background_14007777.htm#query="cartoon%20water%20texture&position=27&from_view=keyword"">Image" class="redactor-linkify-object">https://www.freepik.com/free-vector/swimming-pool-background_14007777.htm#query=...</a> by Vectonauta on Freepik

Font:

https://flopdesign.booth.pm/items/2747965