S'il y a moyen d'avoir un lein avec des screens, je veux bien 
Ici par exemple :
http://www.atari8bit-software.de
Pour les jeux, difficile de faire un choix tellement c'est vaste mais, dans les incontournables, on trouvera (en vrac) :
- les programmes Atari : Pole Position, Asteroids, Defender, Robotron, Donkey Kong, Donkey Kong Junior, Pac-Man, Ms. Pac-Man, Jr. Pac-Man, Super Pac-Man, Dig Dug, Pengo, Crystal Castles, Mario Bros., Star Raiders, Star Raiders II, Joust, Missile Command, Jungle Hunt, Qix, Centipede, Millipede, Excalibur, Final Legacy, Eastern Front (1941)...
- les chefs d'oeuvre d'abord sortis sur Atari : Alternate Reality - The City, Alternate Reality - The Dungeon, Alley Cat, Boulder Dash, Boulder Dash II, Bruce Lee, Great American Cross-Country Road Race, Jumpman, Jumpman Junior, Miner 2049er, Bounty Bob Strikes Back!, Zenji, Oil's Well, Pharaoh's Curse, Necromancer, Archon, Archon II, Fort Apocalypse, Mercenary, Encounter!, Dropzone, Spelunker, Shamus, Shamus II, Montezuma's Revenge, Ballblazer, Rescue on Fractalus!, MULE, Seven Cities of Gold, Murder on the Zinderneuf, Zorro, Bristles, Flip and Flop, Agent USA, Blue Max, Rainbow Walker, Rally Speedway...
- les autres gros hits des années 80 : Airball, Attack of the Mutant Camels, Arkanoid, les Infocom, les Ultima, les Level 9, les MicroProse, Bandits, les Magnetic Scrolls, les Level 9, Beach Head, Beach Head II, Chessmaster 2000, Choplifter!, Conan, Deflektor, Draconus, Drol, Druid, The Eidolon, Feud, Flight Simulator II, Frogger, Frogger II, Gauntlet, Ghostbusters, Gyruss, The Goonies, Gumball, Hacker, HardBall!, Head over Heels, HERO, Hover Bovver, Infiltrator, International Karate, Into the Eagle's Nest, Joe Blade, Kaboom!, Karateka, Kikstart, Koronis Rift, Leader Board, Lode Runner, Lode Runner's Rescue, Mail Order Monsters, Master of the Lamps, MegaMania, Mountain King, Mr. Do!, Mr. Robot and His Robot Factory, Ogre, One Man and His Droid, One-on-One, Pinball Construction Set, Pitfall!, Pitfall! II, Pooyan, Q*bert, Raid over Moscow, River Raid, Saracen, Satan's Hollow, Sea Dragon, Serpentine, Shanghai, Spare Change, Spellbound, Spindizzy, Star Fleet I, Starquake, Summer Games, Tarzan of the Apes, Temple of Apshai Trilogy, Threshold, Tomahawk, Trailblazer, Universe, Warhawk, Wizard of Wor, Zybex...
- les clones sympathiques, les programmes sortis uniquement sur Atari, la nouvelle vague des années 90, toujours en bordel : Abracadabra!, Adax, Alienbusters, Assault Force 3-D, Atomia, Bang! Bank!, Blockaboo!, Brundles, Captain Beeble, Captain Gather, Cavernia, Chop Suey, Clowns and Balloons, Crazy Scooter, Cultivation, The Curse, Czaszki, Dandy, Deimos, Deluxe Invaders, Dredis, Drop It!, Dwie Wieze, Electrician, Enigmatix!, Eureka!, Fred, GemDrop, Ghost Hunter, Hans Kloss, Hawkquest, Herbert I, Herbert II, Imagine, Incydent, Inside, Jawbreaker, Johny's Trouble, Journey to the Planets, Kasiarz, Killa Cycle, Krucjata, LaserMania, LaserMaze, Last Guardian, Lemmingi, Lemmings, Line-Up, Logistik, Mad Stone, Magia Krysztalu, Magic of Words, Magnetit, Magnex, Master Head, Megablast I, Mental Age, Microx, Miecze Valdgira, Miecze Valdgira II, Miny 2.0, Mirax Force, Misja, Monstrum, Naturix, Numblines, Operation Blood, Operation Blood II - Special Forces, Power Down, Preppie!, Preppie! II, Pungoland, Ra, Robot Battle, Robbo, Saper, Schreckenstein, Smus, Snowball, Space Hawk, Spy Master, Starball, Starblade, T-34, Tactic, Tail of Beta Lyrae, Tales of Dragons and Cavemen, Tawerna, Tekblast, Thinker, Thunderfox, Tommingi, Tron, Tube Baddies, Tumble Bugs, Universal Hero, Valgus², Warlords, Wloczykij, Zebu-Land...
Suffisant pour l'instant je pense
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Atari Frog