Description

Global Defense (SDI) on the Sega Master System frames a cold-war-tinged defense scenario as an agile shooter. Players guide an orbital platform across horizontally scrolling zones while an independent targeting reticle intercepts inbound missiles, drones, and carriers. The split focus—platform positioning versus pinpoint shooting—creates a tense, tactical cadence as crossfire escalates. Power-ups reinforce shield and fire rate, while mission shifts add new attack angles and denser barrages. Clean HUD elements keep radar, lives, and threat vectors readable, and the audio suite underscores mounting pressure. Designed for short, score-centric sorties, Global Defense rewards disciplined aim and cooldown management, delivering a distinctive twist on arcade shooting within the Master System catalog.