The following categories are scored from -1 to 1, where 1 would indicate full implementation of the feature, 0 might be an absence or difference, and -1 might be a critical difference or game design philosophy difference.
Example - "Multiple Characters":
For example, on "Multiple Characters" if you have 10 characters each with unique features, you might give yourself a 1.
If you have 3 solid choices, you might give yourself a partial score like 0.4. It's not a direct mathematical representation.
If you have 1 character and she's fully developed, you could give yourself as 0. You have one character.
If you have no characters, the player does not control a character, the player controls a basic shape or stick figure, or the player is supposed to be a complete self insert (first person perhaps), you might give your game as far as -1 in that category.
Some categories do not generally go negative. This is part of how the scale is weighted towards 'similar' games, some we want to use to separate widely, some we don't need as large a range of distinction. Like Bestiary, for example, your game may not have one. That's a zero.
The exception would be where if somehow a feature was missing, against game design philosophy, and also perhaps critically broken to the point of breaking your computer. For these categories you won't be able to select below 0 yourself on this form, just to make this easier on you filling it out.
The numerical score not a value judgement on if it's a good game or how well the feature is implemented. Think of it as assigning a point on a graph far away from another point.