The game is decently challenging which I like, and I like the sprite for the "lives" it gives the game a very nostalgic "Flash game" feel.
The simplistic design here really works, very reminiscent of old school arcade games, as is the music which I really like.
I really dig the button design and the start screen, and the sound design is also really nice I love the contrast between the starting music and the music during the gameplay.
