ZobaxGames
Select available color character cubic, and then fight other cubics with other color than you've selected. Buy weapons like sword, elemental magic staff, gun, missile launcher, or other available weapons, recruit more ally and set their strategy, and/or upgrade your stuffs to help you to fight your enemies, but make sure you have the money for those things, while also save some money (if you wanted to) so that you'll get money bonus based on interest rates after the next battle is finished.
Different Weapons and Different Ammo Type
Each weapon has its own ammo type, which can either Unlimited, Limited, Mana, or Energy.
Different Difficulty Means Different Total Waves
First difficulty contains a total of 30 waves (including challenge missions/waves). Harder difficulties with more waves becomes available after you clear the first difficulty. Clearing each difficulty will also unlock things like more available weapons and more available color character cubic to be selected.
Challenge Mission/Waves
Every main stage has 1 wave that has its mission is different than usual.
Manage Money Carefully
Plan your money use carefully. You can spent a lot of money to strengthen your team each wave, but without any saving, upgrading bounty, or etc, may lead you to struggle in later waves.
Credits
In game Credits on the main menu can be unlocked once the first difficulty is cleared.
Trailer music: Drum Or Bass - Ryan Stasik by BASSLOOM