Gather the game board, cards, suspect pieces, weapon pieces, and locations
Shuffle the suspect, weapon, and room cards
Deal cards to players so each player has a hand
Place the remaining (un-dealt) cards face down as the solution envelope contents
Choose a starting player
Move the current player token to the first location shown on the board (or start location rules)
Take a turn by making one suggestion: pick a suspect, a weapon, and the room where it allegedly occurred
Announce the suggestion to the other players
Starting with the player to your left, ask each player in order to disprove the suggestion by showing one matching card if they have it
If someone can disprove, stop asking and record the information
If no one can disprove, the suggested cards may be the solution
Update your notes based on what you learn from disproving cards
End the turn after the suggestion cycle (and any movement used per your edition’s rules)
Continue taking turns, making suggestions and collecting information
When you believe you know the solution, make an accusation on your turn by naming the suspect, weapon, and room
Check your accusation against the solution envelope
If correct, you win
If incorrect, you are eliminated (or the game ends per your edition’s rules)