What makes some first person shooters perfectly playable with a controller (Call of Duty, Halo) while others support it but are all but unplayable (CS:GO)?

Question

What makes some first person shooters perfectly playable with a controller (Call of Duty, Halo) while others support it but are all but unplayable (CS:GO)?

In: 2

Answer 1

Aim assist is a huge part of the difference. Most controller focused games have good aim assist while older FPSs tend to have little to none. There are also settings like dead zones that may not even exist in some games, and that also makes the controller feel better.