Prototype's consumer (consoles/portable) Tokyo Game Show lineup includes Le Fruit de la Grisala (PSP) and Kudowafta Converted Edition (PSP), both playable.
The studio will also be showing what it refers to as an "extremely new title." This new consumer game be unveiled on the first day of the show.
(Note: "Extremely new" here doesn't mean that the game is very early in development, but that it's a title that is "extremely new" ... how that differs from a title that's just "new" is something we'll have to wait to find out)
Access Prototype's TGS site here.