Silent Hill DS features the return of James Sunderland and takes elements from Silent Hill 2 to create a new game. Although this was never released I would love to see a Silent Hill game for the DS in the future. Preferably for the 3DS so I can see 3D fog and monsters! :D
The DS demo showcases a piano puzzle which once completed leads James into the Otherworld. Although a short demo it does open up the possibility of a game for the Nintendo DS.
The second demo is for the PS Vita only game Silent Hill: Book of Memories. This was presented to Konami to give them to right to create the game we have today!
You can view both demo's in the video below.