We know that some games were released in Europe
only, but theres a lot the other way around too.
Loads of games never made it to Europe (through the
official channels).These games can be considered
rare, or extremely rare. Australians have the same problems/advantages..
A shout out goes to Teflon in the UK and Keita in the US for helping me out.
  In the States, A PAL Telesys Cosmic Creeps  was found. It had a large P on it and the label was different from the NTSC one. Deleto owns it now.
The PAL Data Age riddle is solved. In 1984 a company called Game World bought [the distributing
rights for Europe from] Data Age and offered titles like Bugs, Sssnake and
Airlock. The cartridges are not much different from the original ones, only the Data Age
logo is replaced for a Game World logo.
All salu games: Acid Drop (UK-Only !?) Ghostbusters II My Golf Pick 'N' Pile Games by HES (Home Entertainment Suppliers) from Australia All ITT Family games: Alien's Return (#554-33 391) Base Attack Cosmic Town (#554-33 375) Fire Birds (#554-33 383) Hell Driver (#554-37 729) Laser Base (#554-33 367) Meteor Defense (#554-33 391) Mountain Man (#554-37 737) Peter Penguin (#554-37 338) Pumucki I Wilma Wanderer All games by Home Vision 32 in 1 - ATARI Action Force (=GI Joe: Cobra Strike) - Parker Brothers Asterix - Atari, Inc Defender (Blue-labeled rerelease) - Atari, Inc Dumbo's Flying Circus - Atari Proto Labs this must be the rarest PAL game, since it was a Prototype only Fighter Pilot - AcTiVision Ikari Warriors - Atari, Inc Jumping Jack - Dynamics KLAX - Atari, Inc Robin Hood/Super Kung-Fu - XonoX (Double-Ender) Vulture Attack - K-Tel White Water Madness - Atari, Inc Wing War - Imagic All Carrere Video/TELDEC Games (vidtec/U.S. Games games, in tigervision cases): Eggomania Gopher Octopus Picnic All German Pirates and games by Quelle, StarSoft (S.S) and Goliath. This might come as a shock to you.. games from Absolute Entertainment BOMB OnBase Co. BIT Corp. Gakken Sancho Salu are not too hard to find in some parts of Europe, and games from HES and Salu are found more easily in Australia. Uncommon/rare/extremely rare (yet less rare then in the U.S.): 32 in 1 - Atari, Inc Bumper Bash - Spectravision Fatal Run - Atari, Inc Gas Hog - Spectravision KLAX - Atari, Inc Mangia! - Spectravision Off the Wall - Atari, Inc Road Runner - Atari, Inc X-Man - GameX Z-Tack - BOMB Onbase
All SEARS games with Stellar Track, Steeplechase and Submarine Commander being superexclusive All Apollo games (although these have been imported) All Avalon Hill games All Commavid Games (?! have been spotted in Europe) Most M Network games (some where released by Telegames UK) All Mystique games SEGA games (?! have been spotted) All Twentieth Century Fox games (have been found in Europe) Most vidtec/U.S. Games (some where released by Telegames UK and Carrere) All ZiMAG games Atari Video Cube - Atari, Inc Berenstein Bears (and KidVid) - Coleco Homerun - Atari, Inc Krull - Atari, Inc Q*Bert Qubes - Parker Brothers Quest for Quintana Roo - Sunrise Software Inc (released by Telegames UK tho) RealSports Baseball - Atari, Inc Rescue Terra 1 - Venture Vision Rubik's Cube - Atari, Inc Smurfs Save the Day (and KidVid) - Coleco Spitfire Attack - Milton Bradley Spy Hunter - Bally Midway Survival Run - Milton Bradley Tax Avoiders - American Videogame Taz (Same as Asterix) - Atari, Inc
These where only available in limited quantities (or thru special orders) in the United States and are thus even rarer for PAL ppl! Chase the Chuck Wagon - Ralston Purina (Dogfood) by Spectravision Crazy Climber - Atari, Inc Coke vs Pepsi Asteroids - Coca-Cola, by Atari, Inc Coke Wins! Asteroids - Coca-Cola, by Atari, Inc Cubicolor - Rob Fulop (Imagic) MagiCard - Commavid Music Machine - Sparrow, Christian Software Dev. '83 Tooth Protectors - johnson and johnson. Quadrun - Atari, Inc Video Life - Commavid and the Best Electronics Atari Protos..
Both systems, thought to be PAL-Only or NTSC-Only, yet rare: Asterix - Atari, Inc Boing! - First Star Bumper Bash - Spectravision Fatal Run - Atari, Inc Gas Hog - Spectravision Ikari Warriors - Atari, Inc Motorodeo - Atari, Inc Obelix - Atari, Inc Road Runner - Atari, Inc Xenophobe - Atari, Inc Sources used: The Combined Collection from the Ancient ATARI PAL*Division Digital Press Classic Videogames Collector's Guide Vol. 4 Various issues from the 2600 Connection fanzine. and Many friends from #rgvc. Some pictures taken at RGVC-CON, Dayton OH, 1996