The Adventure of Link (Zelda 2)

DUNGEON 1

                   key
        O entrance  O---O key, red potion
        |           |
   key  |  door     |
    O---O---O---O---O fairy
                |   |
      door      |   |  door
 candle O---O---O   O---O---O boss (key, door)

DUNGEON 2

                               O entrance, red potion
                               |
                      key door |
               O---O---O---O---O
               |               |
     door      |door           |
 glove O---O---O       key O---O
               |               |
               |          key  |
               O---O---O---O   O---O key
                       |
                       |      door
                       O---O---O---O boss

DUNGEON 3

O entrance
|          key
|          100P
O---O---O---O---O---O key
                |
       key door |  key door
        O---O---O---O---O raft
            |  door
            |
       100P O---O---O boss
          door 100P

DUNGEON 4

          O entrance
 200P     |
 key door |  100P
  O---O---O---O
   key| door  |
      |  key  |
  O---O---O   O---O---O key
  | door      |   |
  |      boss |   v  door
  O---O---O   O   O---O boots
 door         |   |
 100P         |   v
      key O---O---O---O key
             door

DUNGEON 5

        O entrance
        |
        |  key 200P door
        O---O---O---O
                    |
       boss    key  |
    O---O   O---O---O---O
    |       |
    |       |
    O---O---O---O--O|O--O   |  partition
    |   |               |
    |   |               |
O---O   O---O--O:O--O---O   :  hidden passage
        |           |
        |     flute |
    O---O       O---O

DUNGEON 6

    O entrance
    |
    |
O---O
    |  (#)
    |   v              minor boss
    O---O---O---O---O---O
        |       |   :  cross
        v       |   v
        O       O---O
        |
        v                 minor
        O---O---O---O---O---O---O doll
        |               | boss  |
        v               |       v
        O               O       O---O
        |               |       |  boss
       (#)              |       v
                    O---O---O---O

DUNGEON 7

        O entrance
        |
        |
    O---O---O---O
    |
    |
O---O---O----O
|            |
|            |
O---O---O    O----O
    |   |         |
    |   |         O
O---O   v         |
|       |         O
|       |         |
O       v    O----O-----O
|       |    |          |
|       |    |          |
O---O   v    O----O     O---O
    |   |         |         |
    |   |         O-----O   O---O
    O   v               |       |
    |   |               O       O
    |   |               |  doll |
    O---O---O---O---O   O--OIO--O fairy
                    |       |   |
                    |       v   |
+---------   ---+   O---O---O---O
______________##|          *|
|###############|           v         fairy
|##_______   ____           O---O---O---O
|#########   ###|               |
+---------   ---+               v  Boss
     *detail                    O---O---O Shadow