I've tried and tested quite a fair number of other browser based card games and here is what I think.
If you're looking for a game with a similar art style and don't mind a game with only female characters then Sword Girls
might just be the next game for you. My initial impression of the game was that the tactical decisions you made lacked depth and that the game was for the most part a game of luck. Although I wasn't entirely wrong and the element of luck is certainly stronger than in Alteil the game does contain a good amount of strategy after you gain a better understanding of what causes each deck to win or lose. What really turned me away however was bad cost for content and an incredibly high amount of grind required for a free player to be able to move away from "starter deck" like strategies.
I haven't touched Urban Rivals
for about 5 or so years however I do recall that the game had an active community and tournament system.
Similarly it's been quite a while since I've last played Shadow Era
. The gameplay is decent as the game is essentially a browser based clone of the WoW trading card game. My main concern with Shadow Era however is the slow/non-existent rollout of content. It's been nearly a year and a half since the initial release of the game and from what I can tell not a single new card has been added. This to me is a huge
I don't believe it's been mentioned thus far however Eredan iTCG
is a game that some of you may enjoy. The aesthetics are more cartoony and the loading times aren't ideal but it has an active community, a fair level of strategy, a marketplace, a trophy/achievement system and a good stream of new cards being added (roughly 7 or so new cards per week).