I thought at first that a bigger ship would be better. Then I quickly learned that a wider ship allowed for a bigger bullet at the cost of getting hit really easily! I love the simple yet punishing reward here. Well done!

I enjoyed the risk reward trade offs with your resize mechanic since when you are large you mare more likely to hit the enemies but that also makes you an easier target to get hit. Good job! 

I love the concept, and when I got it I audibly went 'oooooh'. I would recommend adding a high score and different types of enemies, as currently there isn't a lot of replayability (despite the frenzy mode). By the way, my game is also called Resizer, oops!