Idle Apocalypse

If you like being a villain, then Idle Apocalypse is the game for you. Simple graphics, no frills, but what a plot! Build a tower to commit unheard-of atrocities, drown this world in blood, grow 20 types of unseen monsters, terrible and evil monsters in secret underground laboratories, who will independently fight against positive heroes. You can even help them by casting a few spells.