[Works on Mobile] Click the breeding structure, then click two monsters. Wait for the monster you bred. Click on it once it has bred then wait for it in the nursery. Once it's done in the nursery, click on it and you have a new monster! Then you can start breeding all over again until you have them all. You need 3 monsters to unlock the Potbelly. You need 7 monsters to unlock the Tweedle. You need 17 monsters to unlock Mulch. You need 18 monsters to unlock the Zeppelin. For breeding and nursery, the timer needs to count up to 100 for it to be done. All monsters take the same time. Monsters will take half as long to incubate/breed after waking up Mulch. When you waking up Mulch you can breed all your monsters back. Mulch will take all monsters except Floot Fly, Toe Jammer, Meloch-Ness and Amphibeat. There is a 10% chance of getting a rare monster. If you breed or buy a monster while you already have that monster, it will replace the once you had but it could be a different time. If you breed a monster while you already have one, you can click the breeding structure again to confirm or click away to cancel breeding. Once the Zeppelin opens, you can select monsters to place directly onto Evergreen Marsh from Floating City. Some monsters may require you to wait a certain amount of time until they are fully activated on the island.