The world was about to be ruined.
A brutal family called the “human” appeared and almost obtained the world.
They burnt the forest and polluted water and the sky.
They were very tyrannical.
It is almost the day when the world is ruined.
And they pointed the blade to us who did not have hostility.
We who did not have great power only merely waited for extinction.
But We understood that we could take over their body when we were in the body of the human from trifling chance once.
Slimes counterattack began.
In short, you play on the side of the slimes–the humans are your enemies. There are different kinds of slimes, but all of them are able to take over human bodies, ensuring that you get to field a full array of different human classes in battle.
Ambition of the Slimes is available for free for iOS and for Android; there are no in-app purchases at the moment, though the developer states that there will be in the future. Likewise, although the game is almost entirely in Japanese at the moment, a note on the game’s store page promises English notation in the next version.