I have made this as a suggestion for minecraft
The scale on the left side of the screen shows the top of the map, and the bottom of the map, the red line is where the person is, and the blue line is the water level! Genius!?
Whenever you move around, up or down, the red slider would move up and down with you, and you could see where is near the bottom of the map, and if your into tunnels and caves, how close you are to flooding your cave. The top right of the screen is the coordinates, the numbers could mean number of blocks, and the number below those coordinates would be the amount of blocks below sea level. 0=sea level, +5 is five blocks above, -5 is five blocks below. :smile.gif: