I like the gameplay in this! Sometimes I felt like the collisions were a little unforgiving, and I wish there was more in the way of replay-ability. Keeping the score saved is a nice touch.. though I do wish selecting your initials would "wrap" from A-Z, and Z-A, to streamline things just a little bit. Adding some type of power up.. like gaining health/shield, temporary invincibility, temporary double points, or something along those lines would benefit the game and keep me coming back longer!
For a gamejam its quite a solid game and I enjoy playing it on my handheld! Great work!