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Idle progression
Research and rewards continue while the game is closed, so every return moves the Core forward.

Last Core Idle is a portrait idle defense game built around autonomous combat, permanent progression and short return-friendly sessions. Research continues while you are away, while each run adds choices, upgrades and deeper survival challenges.
Research and rewards continue while the game is closed, so every return moves the Core forward.
Choose from different power cards during runs and boss waves to shape each attempt differently.
Workshop, research and rebirth systems create long-term progression beyond a single run.
Compete on a leaderboard based on your best wave while keeping the core gameplay playable offline.