It's the only IP that would make me buy a Xbox again. I can't believe it was forgotten

Bomberman.

Jet Set Radio Future.

CGE is so much better.

Hogs of War - PSX, PC
Soul Sacrifice - Vita
Tearaway - Vita
Freedom Wars - Vita
Killzone Mercenary - Vita

Sin & Punishment 2 and Silent Hill: Shattered Memories deserve a mentions as well.

I like quite a few obscure games. It's from that time when you got games as a present from people that didn't know the first thing about gaming so you'd get the most interesting things. I'm glad it happened though, and I have quite a few of them in my list in the 50 Greatest Games Thread.

My favorites are;

Kula World, PS1

A Puzzle game where you're a ball rolling around all the sides of blocks and platforms trying to collect keys and reaching the end of the levels.

Asterix, PS1

A simple turn-based strategy game in the veign of Total War or the Risk Board-game, with a few platforming or beat-em-up mini-games thrown in.

Dynamite Cop, DC

An action beat-em-up game where every object in the area is a weapon. Choose from three different characters for three different paths to the end.

Step-On-It!, Mac

By far the most obscure game in this post, this is a puzzle game released only on Mac where the player must create and remove blocks and avoid enemies and hazards to get a key and exit the level. It's basically a clone (but with original levels and such) from the Arcade/NES game Solomon's Key.

Anything under the Touhou Project...in the west.

Grand total of 0 copies legally sold.

Xenoblade Chronicles.... As of now, I have a feeling the New 3ds game could send it into commercial success.

1. Conker's Bad Fur Day

2. Michigan: Report from Hell

3. Harvester

Many games, thought at the top of my head: Baten Kaitos and DBZ The Legacy of Goku 2.