Range Increment

Range Increment is a trait of Weapons. Those without the trait are melee weapons, and those with it are ranged weapons.

In brief:

Example:

Attack Range Effect on weapon with RI 2
0 squares -0 to hit
1 square -0 to hit
2 squares -1 to hit
3 squares -1 to hit
4 squares -2 to hit
5 squares -2 to hit