Demonic Defence 4 is a classic game on www.flash-game.net in which your mission is to defend your castle. Before start the game, you can decorate your castle. You can turn it into what you like. And then you can choose a play mode. Different play modes mean different ways of killing the enemies. You can also set all the game parameter such as health, strength and defense. In all modes, you can use spells which can be bought after every one level. To use a spell, you must have a certain amount of runes. Hover a spell and it will label how many of which runes you will need to use the spell. Gold is what you need to buy everything. Bosses appear every 10 levels. There are 3 bosses waiting for you, and every 5 levels you will meet mini bosses which are larger normal enemies. Bosses are not affected by spells, so you have to take the old-fashioned way out. Good luck!