In this mode, you, as a boy called Yumi, alone solve mystery of Iko Iko island by completing all six worlds, 11 levels (11th level is a boss fight) each world.
Start Single Player Mode
To start from the beginning, select NEW SETTINGS, select EASY or NORMAL difficulty,
then start with A shot.
The initial remaining life is 5.
To resume playing from the previous, refer to the password description.
Island Overview Scene
The island overview is displayed in beginning of every world. Enter the world
by pushing one of the directional keys, A shot or B shot.
Conversation Scene
The game initially starts from a scene in Bomba village. Walk around, talk
to the villagers, and try entering the doors.
There are several other conversation scenes.
Satisfy certain condition in a conversation scene to go to the battle scene.
Start Level
The player entity (Yumi) is in the following conditions when any level starts.
| Number of concurrently placeable bombs | 1 |
| Flame length | 1 |
| Walking speed | Normal |
Beat Conditions
Three beat conditions exist depending on the level.
| 1. | Defeat all enemies. |
| 2. | Blow off all  s.
No need to destroy all enemies. |
| 3. |
Take all |
s. No
need to destroy all enemies. When you satisfy the applicable condition, a goal
shows up. Touch the goal to beat the level.
Be reminded that, if you hit the goal with a
flame, an enemy appears, and you will not be able to enter the goal unless
you defeat that enemy.
Pause
Push F1 key, then the game pauses (temporarily stops) and displays following.
Resume by pushing F1 key once more.
Special Object
Push F2 key in middle of the fight, then following message shows up.
Select Yes, then a special object is consumed, and prevents your life from
decreasing regardless how much you will be defeated.
You are given one special object stock 
in the EASY or NORMAL difficulty, two in the HARD difficulty.
Terminate Game
Push ESC key in middle of a fight, then a following prompt shows up.
Select Yes to terminate the current level and return to the main menu.
Boss Fight
A boss fight awaits in the 11th level of each world. Your life does not decrease how much you are defeated in a boss fight. To quit the boss fight, return to the main menu by pushing ESC key.
Game Over
When your life is 0, the game is over.
Select Yes to terminate the game and return to the main menu.
Continue
After a game over, you are prompted to continue from Level 1/Level 6 of the
current world, or to return to the main menu.
Upon the restart, the remaining life will be 5 in case of continuing from
Level 1, or 3 in case of level 6.
Ending
The ending arrives when you have beaten all the levels and defeated all the
bosses.
After end of the ending, the main menu shows up.