Ranked in these QuestionsQuestion Ranking
Pros
Pro Many options and weapons
The entire arsenal that you can unlock is very awesome to use; different weapons work better with various enemies and stages.
Pro Great graphics
Very simple, but very pleasing.
Pro Lots of levels
It can keep you busy for quite a while if you try to complete every stage.
Pro Free
It doesn't cost anything to download.
Pro Fun
Very fun gameplay.
Cons
Con Lack of depth
What you see is what you get here, there are no characters, plot or movies to be found.
Con Difficulty
Seems unfair at the higher levels, and you may need to die many times in new areas or against new enemies before you figure out how to defeat them. Can be frustrating.
Con Microtransactions
Unfortunately, some options or weapons in the game cannot be unlocked without purchasing them. TIP: sign up for Google Rewards, you can answer surveys for credit to spend at the Google Play Store which can be used to purchase these items.
Con Music
The music in this game is VERY repetitive. There is actually more than one song during the gameplay, but it won't change until a few stages in. Do not take in caffeine while playing (you'll understand once you hear it).