These are some interesting charts provided by Google Trends. It tracks public interest on any major topic based off of search queries.
[url=http://www.google.com/trends/explore#q=bungie%20destiny&date=today%2012-m&cmpt=date]Destiny Hype Last 12 Months[/url]
The peaks on this chart correspond to
1) Destiny Reveal (Feb 2013, highest peak)
2) E3 Gameplay Reveal (June 2013, 2nd highest)
3) Beta Announcement (Oct 2013, 3rd highest)
This next chart shows the relation of Destiny hype compared to past Halo game hype.
[url=http://www.google.com/trends/explore#q=%2Fm%2F09h57]Bungie Hype History[/url]
The major peaks correspond as follows
1) Halo 3 Release (Oct/Nov 2007, highest level of hype in Bungie history)
2) Halo Reach Release (Sept 2010, 2nd highest level of hype in Bungie history)
It is worth noting the "Destiny Peak" on the first chart showing up on the Bungie chart at the early part of 2013. It is an 18 relative to the 100 of the highest peak (Halo 3 release).
Obviously these charts only track Google data. I posted these because I find metrics/analytics really interesting and I was curious about the data for this game. Every game hits it's peak hype at the release date. It will be interesting to see the rest of this year progress and to see how the integration of Destiny to Bungie.net will impact this data.
Here is an interesting one. This is a comparison of search trends for Halo, Destiny, Bungie, and Titanfall:
[url=http://www.google.com/trends/explore#q=%2Fm%2F04h6hv%2C%20%2Fm%2F09h57%2C%20bungie%20destiny%2C%20titanfall&date=today%2012-m&cmpt=q]Halo, Destiny, Bungie, Titanfall Search Trend Comparison[/url]
This one is just depressing, all of the above, plus Justin Bieber:
[url=http://www.google.com/trends/explore#q=%2Fm%2F04h6hv%2C%20%2Fm%2F09h57%2C%20bungie%20destiny%2C%20titanfall%2C%20%2Fm%2F06w2sn5&date=today%2012-m&cmpt=q]Bieberpocalypse[/url]
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You can't compare Halo 3's release to Destiny's reveal. You can only compare it to Destiny's release. Which while Halo 3's was indeed larger at the time, it's important to remember most people think more about the franchise than the developer. To most casual gamers out there, they think more about the name Halo than Bungie. Which kind of means Destiny has no real meaning to them. At the same time, tons of past fans were plenty disappointed in Reach and are very reluctant to give Destiny a shot, most of them saying they don't care, or assuming it will suck without even looking at it. (Also, if you search for the Keyword 'Halo' you will see that Halo 2 was more popular under that search when it was released than Halo 3 was)