One of the more famous ones was the classic game (now, series) Syndicate. The core premise was exactly as described above - a chip that would get wired into the brain to alter all sensory perception. The idea was that the world in the setting had become awful enough that this level of personal surrender was no longer outrageous - people were primarily just altering the perception to be "nicer".

The core plot of the game then assumed that once a critical percentage of people had these, it was a viable tool for criminal organizations to engage in massive campaigns of thought control and overthrow the governments of countries all over the world, essentially replacing states entirely.