Decent game. There should be badges, i.e. "My First Duel" [easy, 5 pts] for Completing Chapter 1, "Experienced Duelist" [medium, 15 pts] for reaching Level 5, "Hardcore Duelist" [hard, 30 pts] for reaching 10,000-20,000 points in the weekly arena, "Legendary Duelist" [impossible, 60 pts, due to the inane amount of time required; it's the highest-level badge, right?] for completing the Series 1 campaign, etc. This game takes weeks to play finished, not because of the difficulty but because of the outdated energy system, an update of which would make the game many times better. [I.e. upgrades to size and replenishment rate of energy meter as level goes up, perhaps costing very little energy for a victorious duel, etc; it's been discussed enough by everyone else.]
Decent game. Would be 10x better with an energy system that is larger and replenished faster when you level up or complete certain objectives, i.e. 10-15% increase in size and 10-15% decrease in time per level. It's not easy playing a game where it takes half an hour per duel.
By the way, I didn't know that it took that much energy to shuffle a card deck. Must be heavy cards.
 "Verdun"){kind=icon}
 "The History Channel Sherman's March"){kind=icon}
 "Freebord The Game"){kind=icon}
 "Soccermanic"){kind=icon}
 "Yu-Gi-Oh! BAM"){kind=icon}
 "Fantastic Football"){kind=icon}
 "Ninja Slash"){kind=icon}
 "Golem"){kind=icon}
 "Turf City Wars"){kind=icon}
 "Transformice"){kind=icon}
 "Turbo Rally"){kind=icon}
 "no-one has to die."){kind=icon}
 "RiotZone"){kind=icon}
 "CS Portable"){kind=icon}
 "Chicken Casserole"){kind=icon}