Kerbal Space Program · Progression system
Technology tree research
Research nodes spend collected Science to unlock their listed parts for the Editor, subject to prerequisites, game mode, and Career settings.
How it works
The source describes a branching tree whose nodes contain one or more parts. Start is unlocked in new Career games, and later nodes require prerequisites; General Rocketry follows Basic Rocketry and costs 20 Science in the listed tree. Sandbox has all parts automatically unlocked and does not use the tree. In Career, difficulty settings may require funds for individual parts, while research facility level limits the Science cost of available research.
Read the supporting references
Check the edition and source version for patch-specific details. Guide methodology.