Pixel Keep Defense

tower defense game I built where you defend five realms, each with its own boss, using two separate economies: gold for 9 tower types (each with a real risk/reward choice at max level) and bones for 9 road-blocking mercenaries, from a cheap Skeleton Guard up to a  Bone Dragon.

There's real depth under the hood — synergy artifacts, tiered Keep upgrades, a full skill tree, and cycle modifiers that reshape a whole playthrough. Clear a boss cleanly and you might tear open a secret Dark Portal - bonus fight nobody warns you about.