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The battle for Athera is about to begin and gamers everywhere are being called to action. Operation Safe Place Tower Defense (OSPTD) is more than just a game in development—it’s an immersive adventure where strategy, skill and heroism collide in a world at war.
OSPTD introduces dual-mode combat, seamlessly blending the cerebral challenges of strategic tower defense with the intensity of third-person action. Players will defend vulnerable populations while engaging in high-octane battles across a continent teeming with danger.
But the excitement doesn’t stop there. NFT integration takes gameplay to the next level, allowing players to own, trade, and upgrade unique digital assets. From exclusive Lucille NFT packs to keys and marketplace items, each asset enhances your in-game experience and carries tangible real-world value.

Explore multiple game modes—from solo campaigns and co-op missions to competitive PvP battles—each offering fresh challenges and rewarding victories.
Get exclusive OSPTD supporter tiers, NFT cards and early access directly from the Citadel official store.
Athera is a land of breathtaking diversity and endless conflict. Towering mountains, mystical forests, arid wastelands, and ancient cities form the backdrop for a story steeped in history, heroism, and peril.
Centuries ago, interdimensional portals appeared across Athera, offering unimaginable treasures—and unleashing horrifying enemies. Demonic forces and human/AI hybrids poured through, sparking a conflict that threatens the very soul of the continent.
Rising to defend the innocent are the Children of the Light, a coalition of heroes wielding both ancient magic and advanced technology. Fortifying safe zones with turrets and legendary warriors, they embody hope in a world on the brink of despair.
From immortal cyborg mages like Nimrod to demonic cults and AI-human hybrids, Athera’s enemies are as diverse as they are deadly. Their goal: domination, resource exploitation, and a twisted quest for immortality.
The war for Athera spans timelines and realities. Heroes like Samuel (Katsu Yuki) and Lucille navigate perilous futures, uncover ancient Mage Codices, and confront enemies whose ambitions threaten all existence. Every decision, every victory, every loss shapes the future of the continent.
Lucille – A healer-turned-cyborg fighting for redemption and humanity’s survival.
Samuel – A Tech Mage from the future, blending advanced technology with mystical prowess to rescue his love, Lucille.
Crispus – Wise and formidable leader of the Children of the Light.
Abt – Loyal warrior and strategic ally navigating Athera’s chaos.
OSPTD’s mission goes beyond entertainment. Inspired by real-world challenges faced by vulnerable children, the game supports initiatives like “Every Child Safe”, raising awareness and contributing to efforts that protect and empower at-risk youth worldwide. Every battle fought in Athera reflects a commitment to justice, safety, and hope for children everywhere.
Be part of this historic journey. Reserve early access, explore NFT assets, and take your place in the fight for Athera:
Official Trailer: Watch Now
Alpha Access: Grab Your Invite
Learn More: OSP
Follow OSPTD across social platforms and stay connected to the unfolding saga:
Twitter: @OSP_TD
Discord: Join Here
YouTube: OSPTD Channel
The Citadel is the ultimate gaming platform, combining blockchain technology, immersive experiences and a community-driven ecosystem. Through Sei Network, OSPTD ensures fast, secure, and carbon-neutral gaming.
Get ready to embark on epic quests, earn rewards and level up your gaming journey. The quest system is coming soon—so prepare for adventure, strategy, and the fight for Athera’s future.
The world of OSPTD is waiting—where every battle, every choice and every hero shapes the destiny of Athera. Step into the fight. Defend the light. Protect the vulnerable. Your journey begins now.

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