Since the public alpha release of Dungeon Colony, the feedback has been very positive. Thank you for such great feedback and please keep testing and sending me your comments ;-).
Now you can download the game without registration by visiting the public alpha Download page. To unlock the game save functionality you need to register a username to get the in game passcode. That is still free during alpha, so go and visit the home page, play the game, and if you like it, register free.
Also, a new version (0.1.6.18) is out with a few bug fixes and new graphics.