The Theme is Gameboy and... PLANT/PLANTS!

This can be any interpretation of the word "plant" or "plants" - including but not limited to:

• Plants (the things that grow)
• To hide something secretly (i.e. "planting" incriminating evidence)
• A spy or covert operative "planted" within a group of people
• A power "plant"
• "Planting" flowers, trees, flags or fence posts.
• You could even have an acronym for P.L.A.N.T (Pirates Like A Nautical Theme)

Be creative with it!

If it's not clear how you've interpreted the theme because you were so clever, consider including an explanation in your game's short description.