So [i]Steel Soldier Ryoko[/i] is a series of real robot mecha action games praised for their challenging gameplay, complex storylines, and excellent character and mecha designs.

[i]Steel Soldier Ryoko: Steppin' on Sunshine[/i] is the absolute darkest game in the series known for having some serious mindscrew moments and an extra boss that is incredibly, incredibly difficult.

They also have increasing difficulty every time you do a new game plus, up to eight times.

... I came up with this on the spot when I was writing the post. ^^;