Mercenary Keep: Siege Defense
Mercenary Keep: Siege Defense is a tower defense game you can play unblocked right here on Physics Shark.
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Play Mercenary Keep: Siege Defense unblocked
Mercenary Keep: Siege Defense is a tower defense game you can play unblocked right here on Physics Shark. It runs in your browser with no download, no install and no account, so you can play it on a school Chromebook, a laptop, a phone or a tablet.
What is Mercenary Keep: Siege Defense?
Castle defense with a living wall. Hold your keep against waves of bandits, undead and witches: tap enemies to focus your crossbow, raise a 5-second Shield Dome against red-marked heavy blows, throw Fire Pots and unleash Crown's Wrath. Every boss has its own move you can see coming. Grow the keep floor by floor, hire named mercenaries, man the ballista and lead short hands-on expeditions.
How to play Mercenary Keep: Siege Defense
Enemies come from the right. Your heroes fight on their own; tap or click an enemy to focus your fire on it. Shield (W) holds 5 seconds against red-marked heavy blows, then waits 5 seconds; Fire Pots (E) hit dense groups; Crown's Wrath (R) is your big strike. Read each boss's wind-up and press the right button. Spend gold on upgrades and floors, and survive as many waves as you can.
Mercenary Keep: Siege Defense FAQ
Is Mercenary Keep: Siege Defense free to play?
Yes. Mercenary Keep: Siege Defense is free on Physics Shark, with nothing to download and no account to make.
Can I play Mercenary Keep: Siege Defense unblocked at school?
Mercenary Keep: Siege Defense runs in a normal browser tab with no install, so it plays on school Chromebooks and laptops, with nothing to install and no account.
Does Mercenary Keep: Siege Defense work on phones and tablets?
Yes. It works with touch controls on phones and tablets, and with a keyboard and mouse on computers.
- LikedNo votes yet
- Rank#695 of 2870
- PlaysBe the first!
- UpdatedNovember 2026
Gameplay
About this game
- Supported devices
- Desktop, phone and tablet
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