This is a five-level miniseries themed around zap drones and a certain tileset theme that I'm currently working on. I've done four of the maps so far, and I may end up doing six, if I really feel like it. There's also a story attached, and each of the levels mirrors the theme of the story. And so, without further ado, I present the Sanctum miniseries.
EDIT: Fifth and final level added! Enjoy. I'm calling this a series now, it doesn't really merit the mini.
Sanctum I: Shell
Sanctum II: Baraxx
Sanctum III: Finite Gateway
Sanctum IV: Cellbreak
Sanctum V: Hextix
Enjoy playing through the story of the battle against the Sanctum. =)