When were achievements, especially their timestamps, introduced to Steam?
I need to know for a project centered around achievements, furthermore the date they were unlocked. I want to mitigate the fact that some achievements before a certain date had no timestamps for statistical reasons.
The earliest indication of an exact date that achievements were assigned timestamps I could find is 2008-10-25 but I could not find any official statements so far. Is there an earlier known and/or even official date?
In addition, what's the exact date that Steam achievement became available in general (without timestamps that is)?
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When were achievements added to Steam?
According to a GiantBomb article Steam achievements were introduced with The Orange Box, which was released 2007-10-09. Half-Life 2: Episode Two, Portal and Team Fortress 2 were the first games to add them.What was the first Steam game to have achievements?
Achievements were made available to developers via Steamworks around the same time, but Half-Life 2: Episode Two, Portal, and Team Fortress 2 were the first games to include them. Since then, the achievement system has grown in popularity, and a majority of Steam's library uses the system, although it is not mandatory.When did achievements start in games?
The idea for game achievements can be traced back to 1982, with Activision's patches for high scores.What game did achievements start with?
The earliest Activision game that included this decorative patch was the racing game Dragster, which you earned by finishing in less than 6 seconds. It was released in 1980, which gives us a definite beginning date for the early forms of achievements as described in the question.Why I Don't Like Steam Achievements
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