Spoilers: From mid to end you don't need any strength all to magic (mage all magic, all the time)... Every single hero uses just area magic in the end of the game. And gem factory without adds can be used for faster time when you refresh page (kong add). Hero tower to 20, specially OP mages spell. Half day game, but a good one.
Game balance is wayyy off... Mage killed 1st 75% of the time, Knight has no taunt -> not a tank, Archer -> 0 armor skills dies with 1 hit all the time.
Pay to Win. And Pay to Play. That's what I have found in 2 days... Feeding system (always!) limits your playing time to few hours per day. Pay to get any good heroes, eq, or anything else in this game. Yeah, you can play free and lose all PvP battles. But if you don't care PvP then it's ok game. Kong needs it's own server, otherwise early started accounts are just OP. Greedy, but otherwise good game from Ninja Kiwi.
Kong is totally dead. Games that wont let you do nothing except these way too long tutorials suck. 1 star. And in last ½ year kong released only few 4 star games and no 5 star games. Most games in kong are too greedy or just repetitive with old gaming concepts and contents. "New games" should not be old games with minor extra mods. Armorgames and Y8 have mostly same games that kong has, so no real difference with allied gaming firms. (Get a good game, search in other sites and you'll see it's old one...) Perhaps gaming companies can't really make good games with current profit schemes.
350 diamonds used and only 15 RANDOM badges from 60 needed... Damn prizes are way too high in this greedy game. And also, soon hitting that lousy energy wall. 5 star game is made way too greedy and gets only 2 stars. Game code is old and used in other games too. Game is just made to rip off some money from kids that haven't played so many games before... P2P (any game with energy, 1st day is often good with extra energy, then they all suck with 2h or less playtimes) and P2W games sucks badly.
Why dev's didn't gave/took same amount of rubies from accounts, when they did change rates? +300/attackx3, -100/coinsx3, ... Achievements give you finite number of rubies, but when you change balance you lose many of them... Dropping rating from 4 to 2.
1st rebirth and after that 99% of points to mastery... Raise mastery high (few rebirths) and then all others to same lvl... Rinse and repeat and you're in e100 range in hour or so...
Advanced research for troops is way off balance. 1000rps/soldier with 200,000M? OMFG that's not even 1% of my total income at that point and can't get enough soldiers to make decent profit. Waste of money. Buy only choppers x1000?...
Item drop rates are way too low! I have to grind for DAYS to get one rare tier 6 item and that's with maxed item gain. And I need loads of them to kill vampire (or it seems to be easier to grind for lvl 80+...)
There's no xxx resource in this planet... There should be all resources, but in some planets those should be hard to get. Ie. I just read article of earth's water and some of it comes from processes deep underground, 1400C and 20000 atmospheric pressure. So, any planet could have some water or water could be made. How much and how hard is that process, that's the other story. (From 90% water world to 0,0001%, but never 0.)