1 Kingdom Rush
Free/Premium Flash game
The best on this list must certainly be this crazy-awesome TD game by Ironhide Games. It’s a cute non-scrollable setting in which you must keep the bad guys (over 30 different units!) from reaching the end of the road. Kingdom Rush features an amazing array of upgradable towers and powers and you can even expand on this by buying the Premium version of the game. You get to decide what this Premium content is worth to you, so it really is an interesting offer.
