The progress of playing is quite challenging but enjoying. The introduction is well designed and this game prepared its own background storys, the completeness is pretty good.
While these are drawbacks of current version:
1) the color of "dangerous" meaning is ambiguous, and it's not easy to figure out which part will hurt player.
2) the behavior of 'upgrade' is not proper considering the gameplay pace.
- movement of 'upgrade ship' is too quick and its appearance is not obvious enought in the colorful environment
- the switch frequency of the 'upgrade type' is too high which make it quite random when play upgrade his skill. if player missing or eaten an wrong 'upgrade type', the difficulty will be different.
- the power of different types of weapon are not fair comparing to each other, when this one work together with 'switch frequency' problem, player will feel some frustration just because he hesitated 0.1 second to eaten 'upgrade box' and get an unexpected one.
Overall, this is a quite good title in this contest, which has a retro arcade style.