Tips : Don't upgrade the Crypt tower when it pops and the wave ends ... wait for it to charge itself ... mine has 3 charges ( because of the upgrades)
and Demon tower while upgraded to burning flame ( the AoE upgrade ) it doesn't shoot a ray ... but it casts an AoE burning lava that can attack invisible ninja bosses and normal ninjas .... + this so more new players or players that didn't know this can see :)
There should be a target selection system on towers like .... for example ... ( Strongest - Weakest - Fastest - slowest - gem wielder ) Hope you see this developer and that's why to click + to let the developer see it! and make the game more enjoyable! it's already amazing!
You have to add a fast-forward button just like the fifth one, ( Epic war 5 ) because this game is slow in-battle, It's not lag, please developer add fast-forward button with these speeds if you can ---> x2 | x3 | x4
They also have to add an additional information to upgrade, like letting you know how much power/health will be upgraded to ? + this so Rudy Sudarto, ( The Developer of Epic war series ) Can see this.
The sound of the music is annoying, should have other songs to play with, to be comfortable , soothing, that song is giving me headache, please add more songs
 "Gate Of Apocalypse"){kind=icon}
 "Cursed Treasure: Level Pack!"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
 "Elephant Quest"){kind=icon}
 "ShellShock Live 2"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}
 "Epic War 4"){kind=icon}
 "Epic War 3"){kind=icon}
 "Bubble Tanks Tower Defense 2"){kind=icon}
 "Monster Slayers"){kind=icon}
 "Arcane"){kind=icon}
 "Bloons TD 5"){kind=icon}