Space Shooter is a very basic shooting game made with Phaser. http://suyashmohan.github.io/Space-Shooter/
The art is free and is provided by http://gamedevelopment.tutsplus.com/ Here is the full link for art http://gamedevelopment.tutsplus.com/articles/enjoy-these-totally-free-space-based-shoot-em-up-sprites--gamedev-2368