Emerald Moon Base is a secret base built by the Esmers on the Emerald Moon. It is built on the order of the Emperor of Zeelich with the goal to construct a gigantic jet engine for the Dark Monk's plan.
Twinsen visits the base in a hijacked Esmer Shuttle to rescue Baldino who has discovered the base but got captured in it.
Upon arrival, the base's radio operator asks him the password. Twinsen needs to have a Translator to understand him. The correct password is "Operation Green Moon". The clue to it is a small recorder on a table at the dorms in the Desert Island Base. Answering incorrectly only makes the outside guards hostile, and they're not too hard to take out.
Trivia[]
The Clover Box in the west wing is trapped. Whenever you get into the corner where it is, two Franco Spear Guards appear.