Re: Tranari, the other races are very very playable. Try getting more cards through achievements, building your own deck, and mixing races. I suspect it's familiarity talking.
Re: Ugicywapih on some energy sources being better than others within a race
You can only have 4 of the same card in your deck, and you need way more energy sources than that. It adds a minor luck factor on which ones you draw, and changes your strategy a little (esp. in multicolour decks).
I liked the strategy around ore collection and evolution, but the gameplay never really got that interesting. 3/5, would be 1 higher but a) my wrist hurt from holding down the skill I wanted to use next ; b) the ending wasn't too interesting especially since it showed you as a baby pichin again ; c) switching out passive skills didn't seem to remove them, at least not 'money matter' ; and d) the pichin vaguely creeped me out (that last one's not really your fault though)
I thought I was lucky when I found her in 4 hours. Then I start a new game to get the card, and find her in the first house I go into. Yes, I found Anna before I found a weapon. :P
re: gilgatex saying tier 3 infantry make the game too easy.... a bunch of cannons and a few barricades will work just as well. It's just really easy no matter what you do. :/
I was worried by all the comments but then I beat challenge mode on medium with almost no upgrades . . . Have you guys forgotten to use your speed boost? :P
Paint order is completely screwed up for me. I only started getting "country" paints after I got black paint (which I erroneously got for beating Egypt)
 "Lucky Tower"){kind=icon}
 "Hidden Dimensions"){kind=icon}
 "Reachin' Pichin"){kind=icon}
 "Gravity Duck"){kind=icon}
 "Zombies Took My Daughter!"){kind=icon}
 "Earl Grey and This Rupert Guy"){kind=icon}
 "Treasure of the castle"){kind=icon}
 "Vertical Drop Heroes"){kind=icon}
 "Give Up, Robot"){kind=icon}
 "Master of Fortresses"){kind=icon}
 "Heir"){kind=icon}
 "Dino Run"){kind=icon}
 "Bubble Tanks Arenas"){kind=icon}
 "DuckLife2: World Champion"){kind=icon}