I was just playing Ninja Gaiden on 3DS and I was at the 4-4 boss fight. It's a pair of demon dog statues which come to life. When you do enough damage to take away half of the boss life bar one of the dogs is supposed to disappear. When I was just playing one dog did disappear but then two more appeared for a total of three demon dogs running around the screen at once.
What kind of glitches have you seen lately?