humble-bundlelinux
I know that all of the Humble Bundle games can be installed on Linux systems.
Is it possible to install and run them on my phone (a Samsung Galaxy Note), since I have a variant of Ubuntu (ARM-based) Linux installed?
The minimum system requirements does not specify any requirements regarding x86 or x64 (or ARM). I haven't tried it yet since I don't want to buy the games then find out that it's not compatible.
Yes, if you pay above the current average, or increase your payment to above the current average at any point, you will receive any additional games added to the 'beat the average' tier.
If you look at the text on the image you linked:
Pay more than the average of x to unlock them when they arrive!
This means you'll get any new games when they are added.
Extra Source: I've done it.
Yes, you can do that. Go to the specific page of your humble bundle, not your account. There you will see a link to increase your purchase.
Clicking this link will open the payment options:
As you can see, it already "knows" how much you paid and you can top it up to any amount you wish or need to beat the average and after paying you will find the new keys below on the same page.
Best Answer
The games are distributed in binary form (without source code), and it's almost certain that those binaries were compiled for x86 platforms. So no, the games won't run on your Galaxy Note.
(Even if they were distributed in source form, there's no guarantee that the code doesn't have any x86-specific parts in it.)
In addition, despite the operating system being the same, the environment on a Linux desktop system can be drastically different than that on a phone. The processor speed, graphics chipsets, and input methods are likely quite different.