Ultrix Sentinel (TRS-80 MC-10)

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IMPORTANT! - READ SYSTEM REQUIREMENTS.

Ultrix Sentinel is a multi-stage, immersive sci-fi action game unlike anything previously seen on the MC-10. From intense orbital combat to the brutal infiltration of the alien prison complex, each phase leads to a final assault on the enemy’s core weapon—before they use it to wipe out Earth.

Features FIVE UNIQUE ENDINGS based on player choice and performance.

SYSTEM REQUIREMENTS:

TRS-80 MC-10 computer with MCX32-SD expansion module and serial I/O joystick interface with single button Atari style joystick.
KEYBOARD CONTROLS NOT SUPPORTED.

Stage 1: Infiltration

“As you approach the alien homeworld, your radar detects multiple hostile attack vessels closing in. Your mission: break through the enemy ships to reach orbit and prepare for planetary entry. Information is scarce—keep your wits about you. The abducted captive humans are counting on you.”

Stage 2: Perimeter Assault

"You’ve gotten past the orbiting alien attack ships, but penetrating enemy ground defenses won’t be easy. Mechanized units are already in position, armed with pulse rifles and orders to bring you down. They may not have heavy artillery, but their numbers—and accuracy—make them deadly. Your objective: breach the perimeter and reach the inner compound. Take too much damage here, and you won’t stand a chance in the final assault."

Stage 3: Rescue Operation

“Your ship hovers above the prisoner bio-holding compound. Automated defenses are relentless—a pulse cannon and an energy shield protect the prisoners. Your mission: disable the shield generator to expose the captives, then deploy rescue pods to beam them up one by one. Timing and precision are crucial—every second counts.”

Stage 4: Core Strike

“With the captives secured, you face the final challenge: deactivating the core stabilizers to trigger an implosion of the alien core weapon. The core itself stands unguarded but is rigged with a countdown that won’t wait. Every second counts as you push your damaged ship to its limits. Fail here, and Earth’s fate is sealed.”