As owner of the thread, you have an "edit" button at the bottom left of its first post.
Use it to edit the said post in order to make it face the new state of the game and update the links.
Then, once it's done, look this time at the top right of the same first post. You'll see a "..." button, and when you click on it an "edit thread" button.
Use it to, this time, change the title of the thread, to make it reflect the new version of the game. Since it's in the "game" section, this should make it appear on the "last updated" list.
But be aware that, while you have (almost) all the rights over this post, it doesn't mean that you can do whatever you want with it. There's rules and good practices to follow :
- Do not remove all the links to the update.
A thread in the game section MUST have at least a link to the last update.
- As game author you don't have the obligation to provide alternate host.
Therefore, once you've updated the thread click on the "report" button, saying that it's an update. A uploader should then take care of the alternate host.
- Clean the links.
If there's a Android and/or compressed version made by a third person, the links will be obsolete, because regarding the previous version. Therefore, remove the links, but keep their text. For this, click on the link, and choose the button on the right.
- Update the "Change log" part section.
It's not mandatory, but it's nice for the readers.
- Change only what really need to be changed.
Normally, it regard only the version number, release time, change log, and links.
- The "edit thread" button is only for the major updates.
If it's a bug fix or just a change in the content of the post, do not use it, and change the thread title directly from the "edit" button at the bottom.
I'm not a moderator, nor a uploader, so there's perhaps others rules, but I don't think so. Anyway, except for the part regarding the "edit thread" button, it's just common sense ; don't mess with the post and respect the readers.
Know that if you are doing really bad things, like removing all the links by example, two things will happen : Firstly you'll lost the ownership of the thread, and secondly the staff will looks at the history of this message to restore the links.
Said otherwise, you'll just achieve to lost the few privilege you had regarding the thread of your game, and annoy the staff.