Since the lack of a reset feature is a common frustration, players have developed external ways to manage their tech tree:
By design, once you successfully complete a mission, any research points spent are permanently locked.
In They Are Billions , the tech tree serves as the backbone of your campaign strategy. However, the game’s design is notorious for its lack of a native "Reset" button. This can lead to a "soft-lock" where players spend research points on non-essential upgrades and find themselves unable to beat difficult missions like Cape Storm. Can You Officially Reset the Tech Tree?
If you are truly stuck because of poor tech choices, the only official way to fix it is to restart the campaign from the beginning . Community Workarounds and Tools