I totally agree. Liar Game is EXACTLY what you are looking for, so you should definitely go for it if you haven't read it yet. I read it and loved it. It is one of those manga I would recommend to anyone. I really hope you will read it

Last edited by ForeignerChan at 6:44 am, Feb 9 2017

How about some Feng Shen Ji?
It's complete and also pretty great, especially the action.

Oh well, you've asked for it now.

If you like One piece you should read Kingdom
If you like Gantz you should read Kami-sama no Iutoori and Kami-sama no Iutoori Ni

I wish you all the best with your struggles of not being addicted to any of these suggestions:

Manga
Sakamoto Desu ga?
Kangoku Gakuen
Fuuka
Usogui
Kimi no knife
Shi Ga Futari Wo Wakatsu Made
Drifters

Non-Manga
Blood And Steel
City of Dead Sorcerer
Dr. Frost
City of Darkness
Feng Shen Ji
The Ravages of Time