Developer Adina Shanholtz has recently created a Unity game called Defense Brigade: "A 2-D game with top down perspective, and functions so that you use both WASD and arrow keys to control. You control two characters, a weak character that’s vulnerable to enemy attacks and if hit will trigger a game over, and a strong character that’s invincible and will destroy enemies when running into them. The objective is to get the highest score."
After coding the Unity version she then went on to see what it would be like to re-create the game using other game frameworks, and in this blog post you can read about how she rebuilt it using Phaser.