Welcome to Summoner's Woe: Heroic Hijinks, where the tables turn, and you take on the role of the cunning dungeon master. In this tower defence adventure, you command the forces of darkness to thwart the relentless onslaught of valiant heroes seeking to plunder your domain. Strategize, summon menacing structures, and unleash a myriad of treacherous traps to foil their righteous quest. Will you emerge victorious in this battle of wits and sorcery, or succumb to the relentless tide of heroic hijinks? The fate of your dark domain hangs in the balance as the dungeon heart needs time to repair to get to full strength.

You can: 

Click on heroes for small damage if nothing else can be done

Summon buildings from first row, second row is non-building summons

Pay in mind:

Insanity loses the game

No mana, too much mana overcharged loses you the game

The dungeon heart dying is also a defeat