A public forum for discussion of Amazon's Kindle Fire tablet. The larger idea with the program was to lure consumers over to Amazon's own hardware, the Kindle Fire HD and Fire HDX tablets, where the. At the same time the Amazon Appstore increased selection to offer more Fire tablet access to the Underground store will not extend beyond. Download Amazon Underground (Kindle) for Android. Get paid apps for free with Amazon Underground. Amazon Underground is an Android app offered by Amazon through which people can freely Commentators have compared it to the Kindle Unlimited plan where Amazon allows readers to read books for free from a . Fire HD · Fire HDX . Although Amazon Underground has been discontinued, you can still get some of its best games on Glitchy on some Amazon Fire devices. Hi all! Have just bought the new Fire 10 HD, but I cannot find or access Underground apps. I can download the ones I already have but the. Featured Fire Tablet Apps and Games See more Fire tablet apps and games Kindle Fire HD ". Kindle Fire HD (Previous Generation). Kindle Fire. Kindle. The Amazon Underground service offers 'Actually Free' apps that won't seek money for in-app purchases, while also offering free access to. (This also slaps interstitial, Amazon-related ads onto any participating app.) Bizarrely, Amazon never ported Underground to its line of Fire TV.