Here is a list of all the games. Special thanks go out to MatthewF and EdyKel. They added many games to the list.
First Row: Gradius, Batman, Super Mario Bros., Contra, Excitebike
Second Row: Metroid, Castlevania, The Legend of Zelda [note: "Legend of Zelda" doesn't work!], Mega Man, Punch Out
First Row: Bionic Commando, Duck Tales, Final Fantasy, R.C. Pro-Am, Cobra Triangle
Second Row: Urban Champion, River City Ransom, Ninja Gaiden, Double Dragon, Kid Icarus
First Row: Blaster Master, Bubble Bobble, Werewolf, Blades of Steel, Metal Gear
Second Row: Kirby's Adventure, Pro Wrestling, Clu Clu Land, Adventure Island, Mappy
First Row: City Connection, Pac Man, Rad Racer, Mach Rider, Kung Fu
Second Row: Micro Machines, Bad Dudes, Baseball, Faxanadu, Jackal
First Row: Cabal, Arkanoid, Tennis, Gumshoe, Robocop
Second Row: Galaga, Battletoads, Tetris, Klax, Crystalis
That's all for the Common Titles! Medal Get!
First Row: Ghosts n Goblins, Kick Master, Rampage, Elevator Action, Spy vs Spy
Second Row: Metal Storm, Duck Hunt, Bomberman, Dig Dug, Captain America and the Avengers
First Row: Karateka, Lode Runner, Popeye, Dr Mario, Adventures of Lolo
Second Row: Rygar, Maniac Mansion, Rush n Attack, Pinball, TwinBee
First Row: The Goonies, B-Wings, Chip 'n Dale: Rescue Rangers, Ikari Warriors, Road Fighter
Second Row: Ice Climber, Antarctic Adventure, Binaryland, Journey to Silius, Scat
First Row: Little Samson, Astyanax, Paper Boy, Shadowgate, Mighty Final Fight
Second Row: Sky Destroyer, Snow Bros, The Legend of Kage, Battle City, Circus Charlie
First Row: Mickey Mouse, Tiny Toon Adventures, Pooyan, 1942, Balloon Fight
Second Row: Donkey Kong, Hogans Alley, Gyruss, Life Force, Shadow of the Ninja
That's all for the Unique Titles! More medals get!
In this mode you see one screenshot and have to enter the name of the game you see.
Here is a screenshot of all the game pictures. You can use this in the Marathon mode, to look up the games. You can cross out those you already entered correctly.