Live preview · Open Beta July 2026

Stream Siege

A Twitch tower-defense your whole chat plays together.

Stream Siege is a multiplayer tower-defense game played live by the viewers of a Twitch stream. The streamer flips it on, everyone watching joins in and controls a unit, and the whole chat defends together against wave after wave of enemies. Two streams take on the same waves at the same time — racing to see whose community holds the line all the way through the final boss.

A game your community plays together

👥

Your chat is the team

Every viewer joins right from a panel on the stream and controls one unit. No install, no account — just tap Join and you are in the fight.

⚔️

Stream vs stream

Two communities face the exact same waves at the same time. Clear faster, survive longer, and pile the pressure onto the other team.

🃏

Draft your build

As the match goes on, you draft upgrades — new weapons, passives, and talents. Play it safe with power now, or gamble on bigger picks later. No two matches build the same.

Spells on demand

Your unit fights on its own; your spells do not. Meteors, freezes, poison clouds, and more — cast at the right moment, they turn a wave around.

Easy to pick up

Units aim and fire on their own — no twitch reflexes needed. Your calls are where to stand, when to cast, and what to upgrade next.

🎯

Built to be read at a glance

Clear nameplates, bold colors, and waves telegraphed ahead of time. A brand-new viewer can understand what is happening in seconds.

How a match plays out

From tapping Join to taking a bow — the arc of every siege.

  1. 1

    🎮Tap Join

    Open the panel on the stream, pick a class, and you are in — no install, no account, nothing to download. You play as yourself, under your own name.

  2. 2

    🏰Hold the line

    Enemies march the path toward your base. Your unit attacks on its own — you choose where to stand, when to relocate, and when to spend your mana on spells.

  3. 3

    🃏Draft your build

    Between waves, upgrades unlock. Grab a stat boost, take a weapon or talent that bends your class in a new direction, or Empower — sacrifice power now for bigger picks later.

  4. 4

    💥Unleash the Siege

    Your team charges a shared Siege meter as it fights. Trigger it to send a souped-up champion crashing into the rival stream’s defenses — with your name on it.

  5. 5

    🗿Race the boss

    It all ends at the Rock Golem — a boss both teams fight at once. Break it apart faster than the other community and the pressure lands on them. First base to fall loses.

  6. 6

    🏆Take a bow

    Every match ends with awards — top damage, clutch saves, siege mastery, and more — plus a full leaderboard so your chat can argue about who really carried.

The full tour →

Six classes, one team

Pick your class when you join, then shape it with the upgrades you draft. Mix your team’s roles to counter what’s coming.

Archer portrait
Archer
Single-target precision
Rogue portrait
Rogue
Ricochets, strips armor
Fire Mage portrait
Fire Mage
Area-of-effect burn
Frost Mage portrait
Frost Mage
Slows and freezes
Alchemist portrait
Alchemist
Poison and damage over time
Bard portrait
Bard
Buffs the whole tower