Your bold action is ignorant and incorrect. The "C:" isn't just a logogram as you falsely assume and insist it is. Despite your arrogance and condescending tone with me, I'm going to place the proof on this talk page for the article as proof that the proper title of this game is indeed C: The Contra Adventure. For your information, just because an official website does not exist anymore for something, it does not give you the permission or right to change something about it and claim that it is valid. That is not how it works. I'll also post scans of the manual itself that supports what I state (and which applies to the other Contra games in the series whose titles lack colon only in the packaging). First off, here are the official, appropriate sources that list this game as C: The Contra Adventure:

http://ca.ign.com/articles/1998/09/17/c-the-contra-adventure
http://www.amazon.com/C-Contra-Adventure-Playstation/dp/B00002STIG
http://www.gamefaqs.com/ps/196860-c-the-contra-adventure
http://www.imdb.com/title/tt0782031/
http://www.gamespot.com/reviews/c-the-contra-adventure-review/1900-2546981/
http://contra.wikia.com/wiki/C_-_The_Contra_Adventure
http://strategywiki.org/wiki/C:_The_Contra_Adventure
http://www.giantbomb.com/c-the-contra-adventure/3030-7454/
http://klustr.net/contra/games/
https://contrapedia.wordpress.com/c-the-contra-adventure/
http://contra.kontek.net/games/games.htm

I would provide Appaloosa's old official website, but it is no longer functional. Same with the early Neo Contra official page.

Many of those links above indicate that the game has only received a North American release. And guess what? The wikipedia article itself even only lists a North American release date; because that is the only region where it has received an official release. Soon, I'm going to scan each page of the game's manual where its proper title is written (ie, every page that has it). Then, it can be agreed upon by any rational person what the real title of the game is; and Verdy P can finally either admit that he's wrong, after so much stubbornness, or continue to show what kind of "wikipedia volunteer" he is.

See these Contra games for the exact same use, or lack thereof, of the colon in the title between the actual name and packaging:

http://en.wikipedia.org/wiki/Contra_III:_The_Alien_Wars
http://en.wikipedia.org/wiki/Contra:_Hard_Corps
http://en.wikipedia.org/wiki/Contra:_Legacy_of_War
http://en.wikipedia.org/wiki/Contra:_Shattered_Soldier
http://en.wikipedia.org/wiki/Hard_Corps:_Uprising

70.51.38.110  

Here are the scans from the official manual of the game:

http://i.imgur.com/omsJPjm.jpg
http://i.imgur.com/tXc3J0n.jpg
http://i.imgur.com/2Tr2ySt.jpg
http://i.imgur.com/ON39M6v.jpg

Verdy_P's logic essentially amounts to "If I don't see it, it doesn't exist" and "I don't care about a subject, but I am always right." He and a bunch of his fellow "volunteers" are a real self-entitled, arrogant, condescending bunch. It's very reassuring that wikipedia is run by people like this. 70.51.38.110  

UPDATE: If ever the article's content is changed by the moron Verdy or any of his special pals, revert it swiftly.70.51.38.110