Follow this link for info about the review system. 1 = Terrible, 5 = Awesome!

Somehow, they managed to improve Major League Baseball! (Well, fly balls, sliding into base, etc.)

Graphics: 4 Sound: 3 Replay Value: 4 Notes: 0- 1- or 2-player game Screen Shots

World Championship Baseball (a.k.a. All Star Major League Baseball) is a godsend for those without a pal to play the original Major League Baseball against. The original baseball still plays well - and this goes right along with it. The additions of some scrolling to the outfield and the cloud of dust when sliding into base (another new feature) are great. Even the sprites for the players have been modified somewhat from the originals.

A total of two World Championship Baseball box variants have been documented.

Image	Vendor	Part Number	Year	Origin	Description
	INTV Corporation	5789	None		DOES NOT have the 'FOR 1 OR 2 PLAYERS' text on front of box; no origin or copyright date; game title and Intellivision® logo on bottom flap—title is upright when box lays face-up; part number was originally assigned at Mattel for this one
	INTV Corporation	5789	None		FOR 1 OR 2 PLAYERS on front of box; no origin or copyright date; UPC bar code (right side) and game title on bottom flap—title is upright when box lays face-up; part number was originally assigned at Mattel for this one

Special thanks to Hankster and Scoubidou for pointing out that game title vs. UPC variations on the bottom flap of the box exist. My theory on this is that the earlier copies of the game had the game title only. Later copies, destined for store shelves, added the UPC barcode. Note that the barcode has the digits 05789 at the end - 5789 was the catalog number of World Championship Baseball. I suspect, based on games in my collection that also exhibit this phenomenon, that there is a correlation between the presence of the UPC and the 'FOR 1 OR 2 PLAYERS' text on the front of the box for some games. I've also seen this for Bump 'n' Jump and Pac-Man, but not on Motocross (yet). Other games with the UPC variation include Tower of Doom and Super Pro Football.

A total of three World Championship Baseball manual variants have been documented.

Image	Vendor	Part Number	Year	Origin	Description
Image not available.	INTV Corporation	5789-0920	None	U.S.A.	Part number was assigned by Mattel—note the classic -0920 suffix, used for manuals destined for the U.S. market; stapled along top edge; submitted by Hankster
	INTV Corporation	5789-0920	None	U.S.A.	Part number was assigned by Mattel—note the classic -0920 suffix, used for manuals destined for the U.S. market; accordian-style folding
Image not available.	INTV Corporation	5789-0920	None	U.S.A.	Part number was assigned by Mattel—note the classic -0920 suffix, used for manuals destined for the U.S. market; map-style folding

A total of two World Championship Baseball overlay variants have been documented.

Image	Vendor	Part Number	Year	Origin	Description
	intvcorp	5789-4289	1982	U.S.A.	Has Mattel copyright
	intvcorp	5789-4289	None		Copyright removed; printed on paper material

A total of two World Championship Baseball label variants have been documented.

Image	Vendor	Part Number	Year	Origin	Description
	INTV Corporation	N/A	None		Large label, square corners; WORLD CHAMPIONSHIP in smaller font on top line, BASEBALL in larger font on bottom line
	INTV Corporation	N/A	None		Large label, square corners, bold font; WORLD CHAMPIONSHIP in smaller font on top line, BASEBALL in larger font on bottom line

	Title screen for World Championship Baseball.
	The puff of dust is a nice touch. Fly balls, etc. are all good enhancements. Were these early 'upgrade' releases the kernel of the idea of the current trend with sports titles, which now ship an upgrade each season?

If you find new, contradictory, or other information you wish to share, please let me know!