Fishy Rescue

Made in under 72 hours for LDJAM43 with theme 'Sacrifices must be made'. In year 20XX, the Earth was conquered by alien fish that stole all human weaponry. Most humans are now trapped in their cities protected by force field domes. But many are still in the wild looking for rescue. You must use your zeppelin to rescue as many people as you can and bring them to the cities! But since you don’t have…