• Try to unlock and have one of each type of monster (Attacker, Defender, Looter).
  • Try to unlock D.A.V.E. once you finish upgrading the Monster Locker to level 4.
  • Don't spend all your Putty in your Monster Locker! Use some in your Monster Academy and Monster Lab too.
  • Once you unlock every monster, you can theoretically recycle it (unless you want monsters that may or may not be released in the future).
  • Do not recycle your Monster Locker before you fully upgrade your Monster Academy and Monster Lab. It is one of the requirements for upgrading those two buildings.
  • You should try to unlock all of the monsters needed to feed your Champion as soon as possible.
  • When it's level 3/4 it can be used (similar to the way you can use a level 3 Hatchery) to hide buildings.
  • You can use it to hide defensive towers or a way/entrance of your yard.

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