Most lemmings saved on Lemmings (Arcade)

According to Official Guinness Records,

The most lemmings saved during a playthrough of the rare arcade version of Lemmings (Psygnosis, 1991) is 366, achieved by Martijn Corbussen (Netherlands) and verified by Twin Galaxies on 2 August 2010.
Featured in Guinness World Records Gamers Edition 2011

For a complete list of 2010 records, please visit 2010 Guinness Records in Netherlands.

Other Netherlands records that might interest you:

• Largest potato gratin
• Fastest time to cycle 10,000 km
• Longest toilet roll tube chain
• Longest stay in the Dutch Top 100 Charts
• Largest collection of bookmarks