Leisure Suit Larry was first released by Sierra On-Line in 1987 and became an international phenomenon. The lovable loser Larry Laffer -- a 40-year-old virgin in pursuit of losing his vir….um, finding true love -- and risqué humor were unlike anything anyone had ever seen or played.
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam