Sure, the premise has been done before (i.e. The Hunger Games and TRON, just to name a few recent examples), but as a sucker for the trope of whole-cast-in-one-enclosed-space, this anime worked really well for me.
Our hero, Ganta (voiced by Romi Paku, who was Ed in Fullmetal Alchemist), is framed for the murder of his entire class and then sent to the Deadman Wonderland prison, where he meets an otherworldly little albino girl, a conflicted kleptomaniac, and a whole cast of nasty and cool characters.
In his spare time (between bouts of fighting for his life using his own blood as a weapon), Ganta tries to catch the villain who really killed his friends.
I quite liked Ganta and Shiro, but my favorite character was Yoh, even though he wasn't in the last few episodes much.
