Exhibit 99.1 Investor Contact: Alex Lewis 877-784-7167 Media Contact: Debbie Atkins NEWS RELEASE 864-597-8361 DENNY'S REPORTS MARCH SAME-STORE SALES Spartanburg, S.C., April 7, 2005 - Denny's Corporation (OTCBB:DNYY) today reported same-store sales for its company-owned Denny's restaurants during the five-week period and quarter ended March 30, 2005, compared with the related periods in fiscal year 2004. Five Weeks 13 Weeks Sales: March 2005 Q1-2005 --------------------------- ---------------- --------------- Same-Store Sales 6.6% 6.3% Guest Check Average 3.1% 3.2% Guest Counts 3.3% 3.0% Restaurant Counts: 3/30/05 12/29/04 --------------------------- ---------------- ---------------- Company-owned 549 553 Franchised and Licensed 1,036 1,050 ---------------- ---------------- 1,585 1,603 Denny's is America's largest full-service family restaurant chain, consisting of 549 company-owned units and 1,036 franchised and licensed units, with operations in the United States, Canada, Costa Rica, Guam, Mexico, New Zealand and Puerto Rico. For further information on Denny's, including news releases, links to SEC filings and other financial information, please visit our website at www.dennys.com.