The Famicom version uses a menu input system, with 
used to alternate between the two menus.
The following commands are in the first menu:
| Text |
English |
Result
|
| ばしょいどう |
Move |
Travels to a different location.
|
| ひとに きけ |
Ask |
Ask a person about something or question locals.
|
| ひと しらべろ |
Investigate someone |
Provides information about the person (Job, personal life, alibi)
|
| なたか みせろ |
Show item |
shows an item to someone
|
| ひと さがせ |
Look for someone |
searches for a missing individual
|
| よべ |
Call out |
Either summons an individual to the police station, or shouts.
|
| たいほ しろ |
Arrest |
Arrests an individual.
|
The second menu contains:
| Text |
English |
Result
|
| なにか しらべろ |
Examine thing |
Provides details about an item (carried, or on-screen)
|
| もちもの |
Evidence |
Shows the list of evidence.
|
| たたけ |
Hit |
Strikes an object on-screen.
|
| なにか とれ |
Take |
Takes an item into evidence
|
| すいり しろ |
Theorize |
Asks Yasu for an opinion about a person
|
| でんわ かけろ |
Dial Phone |
Calls a given phone number.
|
| そうさ やめろ |
Close case |
Closes the case as solved. The chief will reopen it if there's a problem.
|
In Japan, there are a few special numbers that may be dialed. These special phone numbers aren't required, but are present if needed.
- 104, a phone directory service
- 110, the emergency police line
- 119, the emergency fire/medical line.
used to alternate between the two menus.