The original is the cleanest.

The logo should not play too much with the font.
Especially if its only parts of the font.

Its a "serious" package in the end.

d is ok though

Some small recent games of mine:
Griefer 4k http://damocles11.byethost9.com/griefer4k.html
Kobold 4k http://damocles11.byethost9.com/kobold.html
Cave 4k http://damocles11.byethost9.com/cave4k.html