Simulated parallel realities which is already here. Although currently the uncannyness of the experience forces most of us to return to shared existance, there are those using movies, series, games and such for most wake hours. Adaptive and convincing AI does not need good graphics as your brain ks quick to convince that rhe experience in progress is the true reality. Also - the "graphics" part only makes sense if displays are used. Neural inputs are almost on the market.

Tl;dr: The Matrix was on to something