Siegebreaker: Architect of a Broken World [LitRPG Isekai]

They have ancient spells. Alex has physics, 4,000‑psi concrete, and the Siegebreaker OS—a brutal tech system that turns blueprints into real fortresses.Alex Reed just wanted to finish his engineering degree. Instead, a construction accident drops him into Valsalia—a shattered world of floating islands, broken gravity, and monsters that treat humans as snacks.His starting kit? A dying cat‑kin queen whose life is now bound to his, a pack of wolves at the door, and a glowing retinal interface that turns industrial know‑how into power.While mages chant and wave staves, Alex runs structural calculations. While they swing bone spears, he pours ferro‑concrete bunkers and designs steam‑driven kill zones.In a world of chaotic magic, he brings the cold logic of physics—and turns it into an industrial grinder. What to expect: Hardcore tech system: Siegebreaker OS with color‑coded protocols, achievements, and blueprint unlocks Industrial base‑building: from crude walls to automated turrets and kinetic bombardment Science vs. magic: exploiting physics loopholes instead of learning spell lists Competent, ruthless MC: solves problems with leverage, explosives, and very little mercy Kingdom‑building: resources, population growth, economy, and multi‑race alliances No harem · slow‑burn romance Daily updates · Progression Fantasy · LitRPG