A tower defense RPG that works on the subway, on a plane, anywhere. Place heroes, upgrade gear, survive endless waves.

Offline Tower Defense RPG.
Archers, Mages and Knights each change how a wave plays out.
Visit the Blacksmith between waves and build a stronger run.
A boss every ten waves, and it keeps getting harder.
No tutorial, no account, no setup.
Position decides the fight.
Adapt as enemies change.
Come back stronger for the boss.
No. Citadel Champions is fully offline — no connection, no login, no account.
Free to play, with ads and optional in-app purchases.
It's wave-based: endless waves with a boss battle every ten.