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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. One theory on this is that the earlier copies of the boxes had the game title only. When adding the UPC to the box, it would make sense to also add the FOR 1 OR 2 PLAYERS text on the front for some games. Perhaps the more popular releases for which additional boxes were printed got these revisions when Intellivision re-appeared on store shelves.

BSRSteve, Hankster and others have noted that there are also different types of cardboard used in some versions of these boxes. At least two variations of materials have been noted: a smoother, brighter interior vs. a more tan-colored, somewhat rougher stock in others. This site does not document box variations due to different materials used in manufacturing of the box. If a correlation between the materials used and some other substantive change in external appearance appears to exist, it may be noted.

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; accordion-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 four World Championship Baseball overlay variants have been documented.

Image	Vendor	Part Number	Year	Origin	Description
	INTV Corporation	5789-4289	1982	U.S.A.	Has Mattel copyright
	INTV Corporation	5789-4289	None		Copyright removed; printed on paper material
	Intellivision Productions	N/A	None		Part of the standard 10 overlay set from the 2014 Intellivision Flashback; copyright information has been removed; ERROR! the flashback used the standard Major League Baseball overlay; the Supplemental Overlay Pack contains the correct version; these would be useful with the Dollar General version of the Flashback, though, since it includes Major League Baseball as a bonus game
	Intellivision Productions	N/A	2014	U.S.A.	Part of the Supplemental Overlay Pack for Intellivision Flashback

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?

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