(I am a Korean gamer who enjoys gog.com games
Please forgive my English skill)

I bought this game yesterday and tried to play
i first thought graphic quality is the worst in the games i bought
Even I can not recognize character face!
So i changed scaling engine in graphic mode to hq3x
it looks so good but I had to play only at half or smaller size
Is there any way to play at full size and good scaling engine?

How are you playing this game set graphic mode?
I really want to know the way :)

I personally use the DOSBOX Daum SVN for the HQ2x.fx scaler.

http://ykhwong.x-y.net/

Could you explain exactly how to use this program?
Actually I haven't used dosbox
That is why i purchase gog games because gog game does not need additional program like dosbox T.T

Um, if you bought the game on GOG.com, you are already using dosbox. There are many tutorials on youtube. This one is good: http://www.youtube.com/playlist?list=PL20C65EBEFE6CB109

Explaining exactly how to use the Daum SVN (in order to use the HQ2x.fx scaler) is fairly complicated if you don't have a basic understanding of dosbox. It involves editing the dosbox.conf file to adjust the graphical settings. I can post my dosbox.conf file if you want. If you need an explanation in korean, you could ask the author of the Daum SVN.

You can also try some of the other scalers that work in the default GOG.com dosbox version. If you start dosbox in windowed mode, you can change the scalers while the game is running to see which one you like best.

Here's how hq2x.fx pixelshader looks: http://imgur.com/a/0veMc

Thanks for your help
I saw the videoes you linked
it's too hard to learn dosbox edit quickly
so i decided to play at full size of original graphic
i think it has not big differences of graphic with using scaler and pixelshader

I know this is an old thread. But i wanted to let the original poster know that GOG Galaxy now has an easy to use dosbox configure tool integrated into galaxy. Go to your game, click more, then graphic mode setup. Cheers.

The same tool is included in the regular non-Galaxy game. In the root directory.