ref: 94daf57156f34cf95885ba8e6f32ee0f69436bb1
dir: /data/wild/maps/Route18.asm/
Route18Mons: db 25 ; grass encounter rate db 20, SPEAROW db 22, SPEAROW db 25, RATICATE db 24, DODUO db 25, FEAROW db 26, DODUO db 28, DODUO db 29, RATICATE db 27, FEAROW db 29, FEAROW db 0 ; water encounter rate