DraStic

Please implement edge marking - it makes games look prettier and without it, it makes Picross 3D more difficult as each puzzle is one solid block

Lordus, please can you investigate using Google Play Game Services: https://developers.google.com/games/services/

It has an anti-piracy feature as described here: https://developers.google.com/games/services/android/antipiracy

Also, you could use it to back up save states instead of using Google ...

No, if I open Puzzle League DS on my DS and play the game like a book then "down" is the same as pressing "left" on a normal DS game.

I don't think I can do that in Drastic without remapping the keys?

I would like to see a rewind feature e.g. http://youtu.be/bc1k84wo1TE

Some games require you to hold the Nintendo DS vertically (like a book) e.g. Crosswords DS, Brain training, Puzzle League DS. This means the screens are left and right.

However the on screen controls and gamepad controls are still orientated for a DS with top and bottom screens. So pressing up ...