I can think of a few, but since I've been playing a lot of racing games lately, I'll go with the driving line. I don't know exactly when this was first created (I tried to look it up, but Google is only really good for things they can serve you targeted ads for), and it may have been created longer ago than think it was, but it wasn't on any of the games I played in the first decade of the century.
For people who don't play racing games, the driving line is a clearly visible line that appears on or just above the track to tell you where your car should be and when to brake or let off the gas. The main thing it does for me is save me time. Back before the driving line, I used to run a track over and over again to learn it because my vision is poor, and I would often have difficulty seeing turns when there was still time to brake.
For people who don't play racing games, the driving line is a clearly visible line that appears on or just above the track to tell you where your car should be and when to brake or let off the gas. The main thing it does for me is save me time. Back before the driving line, I used to run a track over and over again to learn it because my vision is poor, and I would often have difficulty seeing turns when there was still time to brake.