Ninja Otoshi

Ninja Otoshi is a Japanese-themed flash puzzle game where you play as the Ninja Captain, in charge of a mission to raid and destroy the Samurai Pagoda.
Deploy your ninjas and slash bombs to form chain explosions in this flash puzzle game! Each level of the Pagoda is full of interlinking bombs, and you have to slash the correct bombs to make sure all bombs can be destroyed.

;;;;; NOTES ;;;;;;
I'd like to thank Tom Fulp and all Newgrounds crew for the Frontpage entry.
Medals can SOMETIMES freeze the game when using Google Chrome... (but a lot of times not) Please report if you encounter such problem. Thanks!
Thanks to YeOldeGamer and Jess-the-Dragoon for testing.
The game can be easy for some people, especially up to level 10 or 12. But after that, it should get more challenging.