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.
For players who enjoy idle defense, repeated runs and long-term upgrades in short sessions.
Defend the Core, choose power cards during runs, and invest in workshop and research upgrades between attempts. Compare your best wave in the online tournament.
Use the official links above to check current availability, free features and any in-app purchases. Prices and offers can vary by store and country.
The core gameplay supports offline play. The online tournament is a separate connected feature.
Workshop, research and rebirth systems provide progression beyond an individual run.