Nightblade has its ups and downs. The graphics suck and so do the skills, but it has a nice storyline and some interesting features.
Graphics: 3/10 Horrible. 6x6 sprites (I never knew they made any) are just plain ugly. The good thing is that you can replace them (although the replacements need to be 6x6 pixels too).
Controls: 7/10 A lot to remember. I also want the use of 2nd instead of ENTER.
Gameplay: 6/10 Pretty fast. Also interesting battle system. However, the stats are screwed up. I almost died at level 1 (but its level 0 in NightBlade) because I missed 90% of the time! The spells are also not balanced out well enough, and neither is the HP/MP during level up.
Storyline: 10/10 Most RPG's have boring, straight, cliche storylines. Nightblade, however, is completely different. It has and original storyline and many choices that make the story non-linear. This is possibly the only good factor about NightBlade, although I do have a minor complaint about no side-quests that have nothing to do with the storyline.
Overall: 6.8/10 It would not get such a bad score if it were not for the graphics and the unbalanced gameplay.