Hello and welcome to the site.
We actually don't sell games here, we're an informational website providing many game pages which explain all about a lot of different accessible games available (close to six hundred).
The "go" command is linked to a dropdown box (also sometimes called a combo box), an internet control where you need to select an item from a menu before hitting the "go" button.
When you select a game and hit go, you'll be taken to a page with information about that game, including links to the developer's website, a description of what the game is about, and a link to download it if it can be downloaded.
usually the reason you get the "could not find this game" message is because you've not selected an entry in the dropdown box prior to pressing go and have hit the "please select a game" entry instead.
if you have selected a game entry I'm not exactly sure what is happening since it does work okay, however there are several other ways to find the pages with information about games, you can go to the "gamelist" link at the top of the page and get a list of streight off links to all of the game pages, or you can use the "search games" llink to select games by genre or license type.
Also of course, if you let us know what sort of thing your interested in, people on this forum are always willing to help.
While the number of accessible games is tiny compared to graphical ones, and while all are from independent developers there is a lot of good stuff available both as audio games using sound, and as text, everything from arcade and rhythm action titles to sport to first person shooters, adventure games and even a few rpgs.
There are also lots of games that use text which can be read by a screen reading program too which can also be accessible, especially online rpg and stratogy games of various sorts, plus interactive stories and various sorts of traditional type games.
Most are available for Windows, but there is an increasing amount available on Ios, plus several for android, and some multi platform such as games played in web browsers.
So, lots of stuff to choose from.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)