Track Shooter

In this game, the player needs to rotate around a track and shoot enemies.
With each level, there are more enemies.
After 10 seconds of each level (except the first level and the levels divisible by 4),
a snake-like enemy will appear with crazy and unique movements.
The only purpose of this game is to get the highest score.
The 10th level and every 8 levels thereafter are "easy" levels.