Thunder Siege: Base Builder

Millstone

In-app purchases

About this game

Thunder Siege is a 3D military strategy game. Raiders have taken the outposts around your forest base. Start with a Command Center, an engineer and a little stock of supplies, build a base that holds, train an army and win back the valley, at your own pace.

How your base grows: collect coins, steel and fuel from your War Bond Office, Steel Mill and Fuel Pump, put your engineers to work on new buildings and upgrades, train vehicles in the Motor Pool and on the Helipad, and attack enemy bases for loot. Every Command Center level opens new buildings and higher levels for the rest of your base.

Build and defend
• 20 kinds of buildings: Supply Depots, Field Camps, the Armory, the Radar Station, the Command Bunker and more.
• Guard your base with Machine Gun Nests, Mortar Pits, Tank Turrets, Sniper Towers, Air Defence and Barriers.
• Your defences protect your base while you are away, and after an attack you get a shield.
• Upgrade your Command Center all the way to level 10.

Train your army
• Humvees, APCs, Tanks and Attack Helicopters, each with its own favourite target.
• The Commander, your hero in an armoured command vehicle, calls in an Airstrike once per battle.
• Research 7 weapon classes in the Armory, from the Service Pistol to the Grenade Launcher.
• Call in support from the Support Center: Artillery Barrage, Smoke Screen and Field Medics.

Into battle
• A campaign of 60 outposts, each harder than the one before. First-time stars give Diamonds.
• Raid other players' bases found by your Radar Station: casual raids for loot, ranked raids for trophies.
• Climb six leagues, from Bronze to Elite, and win Diamonds on the weekly leaderboards.
• Up to three stars per battle, and strike back at your attacker from the Defence log.

Play together
• Join a Battalion of up to 20 commanders, or found your own.
• Chat with your Battalion, send each other reinforcements and reach the Battalion Ops goals together.
• Every week your Battalion goes to war against an AI Battalion.

Every day
• The daily supply drop with a seven-day streak, three daily orders and the daily star bonus.
• Weekend events such as Double Loot Weekend and Builder Weekend.
• The Campaign Pass, Theatre Ops and achievements full of rewards.
• Earn Diamonds by playing and use them for extra engineers, speed-ups and the premium Campaign Pass.

One base on your phone and computer
Sign in with your email address and play the same base on your phone and in your computer's browser at thundersiege.com. You need an internet connection to play.

Plays in 16 languages: English, Arabic, Chinese (Simplified), Czech, Dutch, French, German, Hindi, Hungarian, Indonesian, Japanese, Portuguese, Russian, Spanish, Turkish and Ukrainian.

Free to play, without ads. Optional in-app purchases. For players aged 16 and over.

What’s new

Thunder Siege is now on Android! Build and defend your base, train Humvees, tanks and attack helicopters, take the campaign outposts, raid other commanders and play together in a Battalion. Plays in 16 languages. Already playing in your browser with an email address? Sign in with the same account and carry on with your base.