recommend some good anime series

i would like to watch some series with less than 40 episodes...im a death note lover...and dragon ballz too...recommend me some series with action/suspense/mind game or with a good concept[dont recommend anything based on romance plz] ...so plz name some of good series

Watch Elfen Lied, Kill la Kill and Attack on titans ( this one is must - so good )

Try Monster and Knights of Sidonia.

If u r death note fan then u should try code geas...steins gate...monster...

full metal alchemist brother hood, tokyo ghoul.

Monster and Knights of Sidonia. . watch this. I think you love it.

What about "Rurouni Kenshin" or it's predecessor "Samurai X"?

watch Rurouni Kenshin live action movie
One Punch Man(You are a DBZ fan)
Death Note Live action movie(little different story than of manga)