Build planner
Choose a class and difficulty, write your active skills and passives, then check a documented evolution route against your character level and learned catalyst. The planner counts unique names and exports a text plan. The official damage page does publish rules and individual skill pages publish base values; this tool does not simulate their full interaction with equipment, enemies and modifiers. Rules are official single-source data for build 20261028.2, checked 29 October 2026.
How to use the checks
Normal has six active and six passive slots, Nightmare eight of each, Hell ten of each; the Baal option adds two of each. Type one learned skill per line. Select a documented route, enter the current level of its required skill and include the catalyst in your learned names. An ordinary prerequisite must reach level 8; a prerequisite that is already an evolution has its single level. Meet the route’s character-level requirement, then take an eligible chest. This is a partial route checker: it does not validate arbitrary names or every possible build. Export keeps the notes as a local text file.
Questions and answers
Will it tell me the best class?
No. The tier page explains why a multiplier is not a rank.
Sources checked 2026-10-29
Source scope: the official site, FAQ, wiki and changelog share one publisher. Build IDs, installer sizes and detailed mechanics are single-source official claims unless a separate independent reference is identified. Several official links do not count as independent confirmation.
- Damage rules — published formulas; DPS simulation is not implemented here (checked 2026-10-29)
- Numbers — slot caps (checked 2026-10-29)
- Skill systems — evolution rule (checked 2026-10-29)