I already had a number of the games on pc and to be honest this bundle isn’t the strongest line up of games ever but I bought it for Swords and Soldiers as it’s a fun game. The others were a nice bonus for me.
Also released recently is their own app for managing downloads. It works well enough but downloads using your phone’s browser and uses the system installer in the same way that the Amazon Appstore does. Unfortunately apk files are left in your download directory after install so clear that out if you need the space.
While on that topic, go into Settings->Applications->Manage Applications and move some of those games to the SD card. Swords and Soldiers and Cogs were both around 150MB each!