A decent core game, but gets old fast. Definitely has some nice polish to it with certain elements like cool explosions for death of enemies and the player, a weight/momentum to the player's movement, the way the score ticker pulses with each point, and the way the text wobbles about. These elements are very nice and do elevate the game beyond what would just be a very simple game, but even then it can get pretty repetitive quickly: there's nothing to really shake it up and make it exciting like power-ups, enemy varieties, music, levels, difficulties, etc.