[ksymph]

Since the map just has two states - land or water - I wonder if there's a way to represent the same information more efficiently bits rather than bytes.

[H8crilA]

Any decent compressor will take care of this - and much more.

[hnuser123456]

Here's a map in one bit, where 0 is water and 1 is land: 0

[fourthark]

Rather lossy