The addition of challenge levels or any sort of extra gameplay mechanics would have been appreciated too, as in the end there just isn't much to do. (xblafans.com)
However, the campaign is less than $ 9,000 USD away from reaching the first stretch goal, which would add extra gameplay mechanics. (gamerassaultweekly.com)
These games are remastered with stereoscopic 3D visuals as well some other additional features like saving, gyroscope controls and extra gameplay modes. (segadriven.com)