Blockchain Defender
Defend the blockchain from hackers across 25 brutal waves.
Click grid cells to build towers. Click towers to upgrade them.
Validator — basic rapid fire
Firewall — splash AOE
Audit Node — slows enemies
Mining Rig — generates income
Rug Pull — fast & fragile
51% Attack — massive boss
Phishing Bot — invisible until close
Smart Contract Audit — nukes all enemies (30s CD)
Hard Fork — 2x damage for 10s (45s CD)
Boss waves every 5th wave • Tower upgrades: click a placed tower