As a lover of the castlevania/metroid games Im curious to know what are some good metroidvania games out for the android.
The one that I've been playing recently and really enjoying is called "Lemegedon: Master edition" Premium Version Free Version There is also a free version of the game available, so you can play that one and see if you like the game (the free one has some weird IAP, where the premium version you don't have to worry about that). The game starts a bit slow, but gets much better as you play and open up new abilities and weapons.
there's a game i've been following for a couple months called adaeus that they might port to android. it's not done yet, but it looks like it will be cool if it gets finished. http://www.omgwtfgames.net