DOS Games made for DOS require an emulator to run on Windows. Use DOSBox or a frontend like D-Fend Reloaded and read this guide to play DOS games on your Windows PC.
Developer N-Fusion Interactive and publisher Replay Games created a modern point-and-click remake of the original game called Leisure Suit Larry: Reloaded with updated HD graphics, fully vocalized audio, and various enhancements to the original like new puzzles and new characters.
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