I have already bought and activated Tier 3 without the original X-COM games.
Now, a new serial is added into my Humble Bundle account, including the original X-COM games, but I already own them in Steam from a different purchase.
So, if I giveaway the new Humble Bundle serial, what will happen? I don't want to create one that will fail to be activated

I'm definitely disappointed that Brave New World is not included. I got the tier 3 bundle, but Tier 2 is a partial wash for me. I already own Civ IV Complete and Civ V "GOTY" (had a lot of the DLC other than the 2 expansions). I had bought a Civ V Complete Edition a long time ago, as it was cheaper than just buying the two expansions, but never activated it. I'm torn in giving a friend the tier 2 and losing out on the Enemy Within Expansion (plus the DLC) and Starships though. If they had only included the Brave New World Expansion, I could just give a friend the Civ V Complete! Why must they make it so complicated.

And to make matters worse, I have XCOM: Complete, but not the Gods & Kings expansion from the added games.

Dang, I have forgot to reserve it, when BTA was 5.11-6$. Watching Northernlion's videos about Enemy Within makes me want to play it even though I'm not a big fan of strategy games :D

I have to find someone, who has reserved it early enough :D

hmm, looks like XCOM appeared in my inventory today/yesterday as a steam gift, I haven't done any buying that could be connected with XCOM apart from this bundle.

I bought the Tier 1 today and used the key to unlock those games.
Interestingly, there are two such keys in my Humble Bundle inventory.

You reckon this is a bug, or I actually have two copies of the key?

I wish I had read this earlier :S I was hoping to gift all but Slingshot and Civ V.

Definitely worth it if you dont have any of the games.

hmm wish it had separate keys so could make the giveaways for Civ 3, Civ 4, Civ 5 + DLC, Ace Patrol Bundle & XCOM: Enemy Unknown

so 15USD = 23.07 NZD + frees
the games I don't have @ 80% off 3.6 + 12 + 3 + 4 = 22.60 NZD
-X-COM: Complete Pack
XCOM: Enemy Unknown Complete Pack (cheapest way to get the DLC is to buy the main game again)
-Sid Meier's Pirates!
-Sid Meier's Starships

so get Sid Meier's Civilization®: Beyond Earth & one DLC for 80 odd cents would rather want to get the complete pack for it though as seen with their other games complete packs are cheaper than buying the DLC separately maybe could buy the BTA @ 10.33 = 15.90 NZD so I guess that save some money rather than buying from the steam store but concertinaing BTA has already gone up 5USD doesn't seem the wised option but maybe it is IDK decisions are to hard

would have brought the bundle when the BTA was like 6 something USD but thought tier three had Rising Tide DLC not just a little voucher for it so was going to go with for that but no :(

I don't understand Rachellove's Note "Note: Xcom-Complete pack was included in the Humble 2K bundle, which included the 5 classic games, but none of the DLC" on the steam store none of those classic games have DLC, I'm confused what does it mean?

Finally it's ending <3

you have <2 hours to grab this if you have not already NVM ITS THE FOCUS INTERACTIVE ONE

I think the "Increase your order amount" feature has been disabled for this bundle when the deal ended.
It says at the official humblebundle support site that the feature "will be available throughout the bundle sale period as well as for an additional 30 days after the bundle is closed".
Can someone else confirm this for me?