In the past, computer and video games had a motley assortment of navigation templates (typically called "navboxes") scattered at the bottom of many different pages. Such templates are useful for linking series of articles, such as a series of games, but they can easily become too large, garish, or even malfunction, which impairs usability. Following are some suggestions on how to make useful navigation templates that can guide users within an article series.
First, you need to have a template. Luckily, a starting point has already been made at Template:CVG Navigation. Once you have a new page, preferably with a name along the lines of Template:XYZseries or Template:XYZ series, with XYZ being the name of the series, copy and paste the following code:
{{subst:CVG Navigation | name = {{subst:PAGENAME}} | title = | body = }}<noinclude> [[Category:Video game navigational boxes|{{PAGENAME}}]] </noinclude>
Once you have that pasted, give it a title (usually the name of the series the template is for), and insert the articles into the body section.
''[[XYZ Title|XYZ Title]]'' • ''[[XYZ Sequel|XYZ Sequel]]''
{{nowrap|''[[XYZ Title]]'' •}} {{nowrap|''[[XYZ Sequel]]''}}
Unreleased games are a controversial topic for inclusion in nav boxes. The general rule of thumb is that they should not be stubs and should be able to pass a vote for deletion. The key word is pass; if no consensus is reached, the inclusion of the game should wait until a little more information is released. Of course, this is not a hard and fast rule. Exceptions can be made.
Once again, the stub/deletion test is the main factor. If the project was announced, released a few screenshots, then died, the game can probably stay out of the template. If, however, the game had a working engine, released a trailer or two, and had a release date finalized, then the game is most likely worth inclusion.
Trim it down! If a template is over-powering whatever pages it is on, trim it down. Even if all the articles are featured articles, the template can be split into multiple templates. If someone is preventing you from trimming the template down, insert the following:
{{ CVGnavbox-bloated}}
which will produce: User:Th1rt3en/Cleanup-CVGnavbox
Then, discuss the template and what can be done to make it better. Remember, there are no guidelines concerning these templates, and each should be treated on its own individual merits, needs, and functions.