If the game is too large for you display you can reduce the size by specifying a new font information on the command line. You can find all of the choices by listing the contents of the assets/font directory. The default is cp437_16x16.png.
On Linux you can pass the arguments to either delivery-rl or delivery-rl.sh, depending on how you run it:
./delivery-rl.sh -font-path=assets/font/cp437_12x12.png -font-width=12 -font-height=12
And on windows you'll need to supply them on the command line:
delivery-rl.exe -font-path=assets\font\cp437_12x12.png -font-width=12 -font-height=12