There's a single game above all others that has me interested in Humble Bundle: PC and Android 9 and you can probably guess whi--yeah, it's Bridge Constructor. What gave it away?
If you're confused as to why I'm so happy about its inclusion, go watch videos like this.
In addition to Bridge Constructor, you can name your price for Type:Rider, Broken Sword 2: The Smoking Mirror, and Ravensword: Shadowlands, with Kingdom Rush and Knights of Pen & Paper +1 Edition available to those who pay more than the currently sub-$4 average purchase price.
These games are all redeemable on Steam and Android. I for one can't resist.