WebKit

Ever since THE TOWER, Castle has been permanently ruined for me

I don't know myself, but maybe you can create a tycoon of sorts. 

Build a tycoon game with many floors of different colors

card-bVIF

This will give you a button that will destroy every enemy, turret ect and give you a free win. Use this only if you feel like spending bricks. 

[NEW] out of ideas. Play Out of ideas, an Outofideas game by @I_like_TAWOG, free in your browser on Castle.