Terran R&D

Project   Prerequisites   Modifier
LB  Land combat this turn  Base destroyed this turn
LT  1. R&D on LB on previous turn
2. Land combat this turn
  Base destroyed this turn
DB  1. R&D on LB on previous turn
3. Land combat this turn
  Crawler destroyed this turn
DT  1. R&D on LB on previous turn
2. R&D on LT on previous turn
3. Crawler attacked this turn
  Crawler destroyed this turn
SAF  None  Lander destroyed this turn
Corv  1. R&D on SAF on a previous turn
2. Oribital combat this turn
  SAF fired at the MS or an escort this turn
ISF  Underwater combat this turn  Any Alien destoryed underwater this turn
AR  Atmospheric Index currently 15 or less  AC destroyed this turn

A die roll of one or two means successful R&D. If the conditions of the Die Roll modifier are met a die roll of one, two or three means successful R&D.