Variant Only: Gambit only appears on the cover or variant covers.

Crossover/Event: This comic is part of a multi-comic event or crossover across titles.

Character Interactions: Gambit interacts with another character outside standard team work.

Stolen Item: Gambit has taken an item in the issue.

Charged Item: Gambit charges an item other than his cards or staff.

Power Shift: Gambit uses his powers in a different or stronger way than normal.

Title Logic: The title of the issue is a reference to something else in history or pop culture.

Digital Only: This issue was available only as a digital title, no print.

Uniform Change: Gambit has changed his regular uniform to a new team uniform.

Fun Facts: Random information, errors, or events that happen that are important enough to share.

Extras: Gambit appears in advertisements, pinups, or outside storyline pages.

Exclusives: Was released only through a specific convention, website, or store. Generally had a different cover, or variation of the original cover like foils or textless (virgins). Typically had a low print run and higher price point.

2nd/3rd/4th Printing Variant: When an issues is very popular the publisher will decide to make another print of the comic later (usually a month or two) after it's original release. These are typically first appearances, deaths, or special events. In older titles there is sometimes no way to tell if you have a first or secondary printing, but in more modern comics there is typically a different cover or the title or background is a different color than the original release.

Newsstand Edition: Released through newsstand vendors on regular magazine racks in department stores, groceries, and bookstores. These comics had a lower print run and can be distinguished by the barcode, being different than those sold in comic book stores. The covers and all other aspects were generally the same as the regular release. These were typically destroyed at the end of the month to be replaced with the newer month's title, making there numbers more rare. This is why they have been more sought out by newer collectors.

Mark Jeweler Insert Variant: Newsstand Edition comics that were released to United States Military bases in the 1970-1990s. These were a small run of newsstand editions that had an insert advertisement for Mark Jewelers, a large mail order jewelry store during that time. They were exactly the same as the regular release of the issue, but with the 2-3 page insert stapled in the center. Newsstands were already a lower print run, and only a very small fraction of those had these inserts added. Being sent to military bases made the probability of being thrown away or destroyed very high. You can sometimes spot an insert by looking at the top of a newsstand comic and seeing a burgundy or blue group of pages in the center, but this in not always possible.

Price Variant Edition: These were comics that were printed and distributed by the US printers, but had a different price (typically a different monetary unit) and barcode. These were distributed by the United States to other countries by the way of military bases and English speaking territories ran by the United States. The comics are exactly the same as the Newsstand Editions in the United States, just with the proper monetary unit on the barcode for that country. The most commonly found is Australian, marked with an "AUS" next to the price. This was discontinued in the late 1990s and now all price differences are printed on the same comics or the country has it's own publishing group.

Standard Direct Edition/Deluxe Direct Edition: This was a very short run of printing in the 1990's. They were transitioning from the old style newsprint paper to the more glossy paper we are used to today. The pricing was a factor in this change, a lot of collectors not wanting to pay the higher price point for the nicer paper and other collectors liking the nostalgia of the newsprint over the glossier paper. As a compromise, Marvel released two different variations of each direct edition (comic shop) comic, one in the lower grade paper for the $1.50 price point and the "Deluxe" edition that was $1.95 and had the new nicer glossy paper and printing. This lasted less than a year and Marvel transitioned over to just the glossy paper and price point. The comics and the covers themselves are exactly the same, just a different paper and price point on the barcode.