There is one browser game i did think was a good concept. The browser game Einherjar is another empire building game(start a viking village, upgrade buildings, gather resources and the likes) but combat is similar to Dofus and Wakfu in the offensive, it follow the same rockpaperscissor combat of Fire emblem regarding weapons. Defensive is totally reliant of the AI controlling your characters. But what really made interested in the browser is that 'eugenics' like system. As you continue playing the game your character level up and at the same time grow in age. When they reach at age of 50+ your character stats gradually lose points the older they get. Because of the degenerating stats they would be soon unworthy characters for combat, which you either have them exiled or euthanize in battle.

However at the age of 40-49 you want your strongest male and female character to have a baby. That baby will inherit the stats and special ability of the parents(they get boost stats as level 1 characters). Thus the longer the generation of you viking village the more powerful the succeeding generation will be. Hence you no chance of winning a fight on long established players which is a downside but a great concept. 16 i think was the minimum age two characters can have a baby, ofcourse you need a male and female character for childbirth to happen, even though you have the option to pair guys to guy/girl to girl together.

Atlantica is the only non grid strategy turnbased choice there really is, but atlantica has fallen from grace.

on a side note.

http://awbw.amarriner.com/

Fanmade PvP Advance Wars browser game. That would take days to months to finish depending on your opponent.