Bug + no évolution + slow

It could have been a good game but it is not:
- To win you will use only half of the gun as the other half is no use
- there is no evolution between start and end levels
- once you be succeeded in first 10 round there are no challenges

Very often the game bugged and crashed (first game doing it)
When there are too many enemies impossible to play x2 game is very slow and impossible to interact

Well there are much better turret games...

SmartyBU about Defense Zone HD, v1.5.8