Royal Flush - 1 pop
Drop-A-Card - 2 pops
Target Alpha - 2 pops
More interesting are games with no pop bumpers:
1948 Ali-Baba Gottlieb
1948 Screwball Genco
1951 Hits and Runs Genco
1952 Horsefeathers Williams
1952 Twin Hockey Gottlieb
1958 Flying Aces Genco
1959 Seven Seas Gottlieb
1971 Extra Inning Gottlieb
1981 Lightning Stern
1981 Pharaoh William
1981 Iron Maiden Stern
1981 Elektra Ball
1982 BMX Bally
1985 Rock Premier
1986 Grand Lizard Williams
1987 Super Sport Bally
1987 Hardbody Bally
1987 Arena Premier
1987 Fire! Williams
1987 Big Guns Williams
1987 Victory Premier
1988 Blackwater 100 Bally Midway
1988 Swords of Fury Williams
1988 Truck Stop Midway
1991 Car Hop Premier
1993 Judge Dredd Midway
1994 The Shadow Midway
1995 No Fear: Dangerous Sports Williams