That game punishes you for clicking all of the squares by giving you a seizure.http://www.visual-things.com/flash-sound-matrix/
Not exactly sure if this can technically be considered a "game", per se, but it's definitely a lot of fun to mess around with. It's nigh impossible to make something not sound really cool in this thing (unless you click all of the squares, of course).
http://www.bubblebox.com/play/action/1675.htm
I'm not sure if it's been posted before, but wow.
Basically, the idea is to infect a town/city/whatever with zombies and watch them spread. The virus is upgradable, and there are special unlockable zombies (such as the Tank and the Boomer from the Left 4 Dead series.)
EDIT: I should point out that destroying the towns (killing everyone) rather than merely passing them is the way to get ahead. This also becomes easier if you upgrade the virus itself rather than buying bombs. (However, buying additional clicks/upgrading the spread when you can afford it is highly recommended.)
EDIT 2: It's really up to you in regards to destroying the towns for how easy you want to make the game. You don't have to destroy every town; it's probably better that way in order to keep the game interesting.
These are all pretty horrible.Some other newground games:
This is the only level - One level, but it is different each time, gets you think a bit and is really fun.
Acheivment Unlocked - Just like the previous game, this is different than usual. Instead of trying to beat a final boss or get to the end of the level, your goal is to unlock all 100 achievements. For people who prefer getting achievements instead of beating the game.
Updgrade Complete - In this game, you can upgrade everything. The main screen, the music, the menu, everything is upgradeable. It's really simple and easy to beat, but the concept is so fun as well that one playthrough will be fun.
well they are more conceptually different and fun games but i can see why you would want to stick to a mainstream rpg concept that has been done over and over o_______oThese are all pretty horrible.
Try Sonny 2: http://armorgames.com/play/2900/sonny-2
Of course this is a game which has actual strategy involved, it's pretty fun. It is probably the best flash RPG/Adventure game out there.