I suggest a game option, "Compress compiled data" to reduce the size of compiled games. They get very large quickly in high-resolution projects... You could compress the distibution, of course, but it does not solve the problem of the big executable.
The vast majority of the game size in most games is the sprites -- we've already discussed sprite compression in this thread:
http://www.adventuregamestudio.co.uk/yabb/index.php?topic=20339.0