The Interlock System is R. Talsorian Games' proprietary role-playing system.
Stats and skills are both rated on a scale of 0-10 with 0 representing no ability/no training and 10 representing the maximum ability possible for a human being. A typical skill roll will range from 12-20 for most tasks, so a skill 10 + stat 10 will succeed at virtually any task barring a critical mishap, while a skill 0 + stat 2 (minimum statistic level for a human character) will fail at any but the very simplest task, and even then will succeed only on a critical success. Interlock builds on the typical skill-based paradigm by offering "template" (Mekton) or "profession" (Cyberpunk) packages that give specialized abilities to characters that take these packages.
There are nine Attributes: Intelligence (INT), Reflexes (REF), Cool (COOL), Technical Ability (TECH), Luck (LUCK), Attractiveness (ATT), Movement (MOVE), Empathy (EMP), and Body (BOD). Characters must have a starting Attribute stat minimum of 2 and a system stat maximum of 10.
In Cyberpunk and Cybergeneration Empathy is very important. It not only controls interpersonal interactions but it also determines how much cyberware you can install. Every piece of cyberware has a Humanity Cost that reduces the character's base Empathy. A rating of "0" or less means the character has become psychotic and can no longer be played.
The Interlock System is best known for its Lifepath system, a storytelling device used to create character backgrounds without particular direct benefit or drawback to the character, avoiding min-maxing.