HERE IS A GRAIN OF SALT. PLEASE TAKE IT.

Stolen from reddit because forget originality.
http://cdr.xpaw.ru/search/?q=haloSome entries have been added by Valve as test apps for the first 3 Halo games. Could it be possible that we'll see a Halo 3 PC? Maybe they figure it might be profitable to port it to PC, since Halo 3 on Xbox 360 is all but dead.
Screen in case it's removed:
http://i.imgur.com/zIXAr4O.pngThere are also community pages for all 3:
Halo CE:
http://steamcommunity.com/app/216760Halo 2:
http://steamcommunity.com/app/216780Halo 3:
http://steamcommunity.com/app/216800
Also relevant blog post:
Halo 3 confirmed for Steam!!!!
Actually, no. Not by any stretch of the imagination is it confirmed.
Since a few hours ago, we have started processing Steam Hub names in the database. Some people noticed things such as Halo 3 appearing in the database. Now, these Game Hub pages might very well be real/truthful, since I have no idea how they are made. Does Valve make these, or are they automatically made when a publisher enters/reserves a game?
In both cases, there are lots of errors in the Steam Database, some bigger than others, and this might just be one of them. Is it a placeholder and is Halo 3 actually on it's way to Steam? Or is it just another Steam Hub page that one of the publishers made for name-reserveration's sake? Or did some completely different developer need a cover to put a test version of his/her game under? Who knows?!
Everything you read on this site is subject to change, and until there's an official announcement from whomever is making whatever, it's not 100% truth. For all we know, at one point all the Halo's might have been coming to Steam, until they decided to go XBOX exclusive with Halo 3. We know just as much as you do. For now, let's just take the Game Hub information with a pinch ton of salt.
We've notified Valve of these strange Steam Hubs and are waiting for a reply, in the meantime come join us on
IRC (#SteamDB on Freenode) to discuss this.
- Marlamin
http://cdr.xpaw.ru/blog/3/
Discuss shoddy ports.