Fractured Soul's release status may be in question, with Endgame Studios tentatively planning to put it on the 3DS eShop in two parts, but it's worth hoping the game finds its way to players. The side-scroller takes one clever DS-friendly mechanic -- parallel worlds, one on each screen, that the player can jump between at any time -- and then cranks that to every possible extreme, to challenge and/or punish the player.
The main gimmick is easy enough to understand, and the first few levels ease you into it nicely. Two side-scrolling environments exist in parallel, one on each screen, but they're slightly different from one another. There might be a bridge on the top screen where there's a gap on the bottom screen, or a wall in place on one screen that isn't on the other.