The Starfireseries is a wargame which simulates combat in space at sub-light speed. Ships are made up of various combat and non-combat systems each represented by a letter (or combination of letters). A "word" makes up a ship. As damage is done between ships, letters are crossed off from left to right within the "word" until the ship is destroyed. Movement is on an "endless" hex map, and occurs in 6 impulses. Galactic travel is accomplished through "Warp Points" which connect star systems in a random manner. The game includes scenarios for a fictional future ("Future History") of the conflicts between the Terrans of Earth and the other races of the galaxy. Also included are ship construction rules for designing custom ships for open fleet battles.
This is table 5.31 (found inside the back cover) changed to use a 1d10 instead of 2d6. This allows multiple weapon shots to be rolled at the same time if you have a few d10's.
The new numbers are based on rounding down the old probabilities.
It still seems to produce the same level of hits as expected, but it does it faster.