[Vishnu Dharmapal]

MS DOS Games are Good & low in size. My Question is is there any way to develop these games as a WP app. I think most of them will like it.

[DecaTec_de]

Of course you could develop these games as WP app. But you should have access to the source code of these old games and try to port the code onto the new platform. You could also reuse the tiles, ipictures, etc.
However, you also should keep the copyright in mind!

[Vishnu Dharmapal]

I'm here to suggest one of my thinking to developers here, That's all :)