Key for the Leisure Suit Larry - Retro Bundle from Fanatical. Activates all these games:

Leisure Suit Larry - Magna Cum Laude Uncut and Uncensored
Leisure Suit Larry 1 - In the Land of the Lounge Lizards
Leisure Suit Larry 2 - Looking For Love (In Several Wrong Places)
Leisure Suit Larry 3 - Passionate Patti in Pursuit of the Pulsating Pectorals
Leisure Suit Larry 5 - Passionate Patti Does a Little Undercover Work
Leisure Suit Larry 6 - Shape Up Or Slip Out
Leisure Suit Larry 7 - Love for Sail