2001 · كتاب مصدر (قواعد/خيارات لتعزيز اللعب)

d20 Class Construction Engine

A point-based system for Game Masters to create custom fantasy classes within the framework of the core rulebooks. The rules can also be used to reconstruct existing classes, accounting for their differing abilities and inherent balance issues. The engine is designed to remain largely independent of individual GM play styles and campaign settings.