2-in-1 Fluid Intelligence: Fastest

This DLC for 2-in-1 Fluid Intelligence adds a reaction test to the game. The test consists of a single colored circle that the player must click on as quickly as possible when prompted. It records the player's best time in milliseconds, calculates an average based on all their attempts, and encourages them to keep trying to beat their high score. It also provides a chart of reaction times ranging from best to worst to show the player how good their performance is.