This article is about buttons from Test Subject Blue. For buttons from other games, please see Buttons.

Buttons are interactive objects in the Test Subject series.

General appearance

Buttons appear attached to walls, with a green button to activate it.

Game information

Buttons appear in many levels of the Test Subject series, and will activate or deactivate a certain object or objects.

To activate buttons, they need to be shot with a blue proton bullet. An orange enzyme bullet will not work even though it is probably a reverse engineered version of blue proton bullet.


There are two types of buttons: deactivation buttons and switch buttons.

Deactivation buttons

Main article: Deactivation buttons

Switch buttons

Main article: Switch buttons