Over on Itch.io, Ansimuz has shared a wonderful complete game art assets pack that includes everything you need to build a scene in a game. The pack includes pixel art, audio files, and even the source code for an example demo scene that was made using Phaser 3!
From the page: "Pack Includes: Modular Loopable Backgrounds, Tileset at 16x16 pixels each cell that make bigger tile blocks, Male Shaolin Monk Player Character fully animated with 9 different animations, 3 different enemies sprites fully animated: Angel, Burning Ghoul and Skeleton Wizard."