timppu: It is this one:
https://www.asus.com/fi/Tablets/Eee_Pad_Transformer_TF101/
Screen: 10.1" WXGA (1280x800)
Is that a lot for a tablet? The tablet was released already in 2011, I bought one in late summer 2012 I think, still using it (after rooting it and upgrading its Android to 4.4.4). It is still going strong even for new Android games, albeit the Android version of Oddworld: Stranger's Wrath is a bit sluggish on it (but still playable IMHO).
I have an Archos Gamepad 2 (which is 7" if I remember well) and desktop sites work pretty well on it. So yes, its probably sizable enough to load desktop sites. Good to know its great for Android games. Heh, I'm always wishing to get my hands on one of these convertible tablets.
They can do whatever Humble Bundle/Humble Store is doing. HB offers an installable Humble client for Android with which you can at least download, install and launch your Android games you've bought from Humble Bundle (I didn't check if you can also buy games with it, or if you need to use a web browser for that). The HB games are .apk files so they can be installed and played also without the client (and that's how I prefer doing it myself, like I do with my GOG games for Windows).
That makes the app work well, but it will alienate GOG coverage from curious wanderers on the Play Store. By hitting the app on the Play Store, they can target new users via the Google Play platform to present the very idea and existence of GOG. Then if there are Android apps to be downloaded via GOG, they can offer the sideload application like with the Humble Bundle app you suggested.
For it to work, certainly you need to enable in Android options that you can install third-party applications. By default Android lets you install only apps from Google Play.
This is one of the first things I do on any Android device I get my hands on.
Increasingly though, many of those HB DRM-free(?) Android games download most of the game data from online (from developers' servers I guess) when you run the installed game the first time, so in those cases the .apk file is merely an online installer. For me that is not really what I'm looking for with DRM-free Android games, the .apk files should always be fully self-sufficient so that the game can be installed completely without having to use the internet connection.
Haven't noticed much of these games until now, can you list some names of them? Maybe I have had the good Android apps till now. Though for me, if its just an extra download and nothing more (as in no verification on boot or no trying to install existent files) I'm okay, as long as I'm able to zip the data and store it on my hard drives for usage in the later future. That and as long as the data can be
moved between the internal memory and the external memory.