FIREWALL — One-Thumb Core Defense

FIREWALL is a one-thumb arcade defense game with a sharp core loop: you are a firewall core at the center of a neon arena — tap to emit an expanding pulse ring that destroys incoming data shards before they breach you. Pop shards in the outer ring for 2× precision points, chain multi-kills into a combo multiplier, and fill the PURGE meter for a screen-clearing blast. 4 special enemy types (Splitters, Phantoms, Shielders, Warpers), escalating threat waves, and a local high score keep every run tight.