How Icebreaker works

What is Icebreaker?

Icebreaker is a party game for two to eight players: chubby penguins on a field of hexagonal ice floes, surrounded by freezing water. The goal is simple – be the last one standing on the ice. Getting there is not: every floe only holds for a moment, your opponents ram you with their belly slides, and after 20 seconds the edge of the arena starts breaking away as well.

A round usually lasts less than a minute, and the next one starts right away. You play to 3, 5 or 7 round wins. Bots fill empty slots, so you can play alone too. Icebreaker runs in your browser – on a computer, with a gamepad or on a phone – with no sign-up and no download.

Controls

Keyboard

• WASD – waddle across the ice
• Hold Shift – charge the belly slide, release – launch
• Space – hop

Gamepad and phone

On a gamepad you move with the left stick or the D-pad, A hops, and X, RB or RT charge the slide. On a phone you steer with a virtual stick and have separate buttons for hopping and ramming.

The rules in detail

Floes

Every floe carries weight for about two seconds in total. That time only runs while someone stands on it, and it never recovers: a floe you have already stood on for one second only holds for one more. If two penguins stand on the same floe, it is used up twice as fast. When the time is up, the floe cracks, and a little under a second later it sinks. While you are in the air, you put no weight on any floe.

Belly slide

The belly slide is your weapon. The longer you charge – up to three quarters of a second – the faster you shoot off. While charging you only move slowly. If you hit an opponent, they get an extra hard push and slide away. After each slide it takes about a second before you can charge again.

Hopping

A hop takes you over gaps between floes. There is a short pause between two hops. You can barely steer in the air, so you choose your direction when you take off.

The edge breaks away

After 20 seconds the outermost ring of the arena starts to break, then the next ring every three and a half seconds. The arena keeps shrinking until the last penguins face each other in the middle.

Scoring

The last penguin standing gets a point. The first to reach the chosen number of round wins takes the match. The table at the end also shows how many opponents each player pushed into the water and how often they went for a swim themselves.

The three arenas

• Floe: one large, solid sheet of ice. Lots of room to dodge, but also lots of room for run-ups.
• Ring: a ring of ice around a hole in the middle, with a few gaps you have to hop over. Get pushed towards the centre and you fall into the hole.
• Islands: a small central island with six islands around it. Narrow bridges lead to some of them; for the others you have to jump.

With “Rotating” you play the arenas one after another.

Multiplayer

One player creates a game and gets a five-character code. The others type it in or open the invite link. The host's browser runs the authoritative match, and the others connect directly to it (WebRTC). So that the controls still feel instant, every browser predicts its own penguin ahead of time. If you join in the middle of a match, you watch until the next round.

Strategy and tips

• Keep moving. Stand still and you fall through. Run small loops across fresh floes.
• Read the cracks. Cracked floes are about to go. Push your opponents right there.
• Don't ram blindly. A fully charged slide flies far. Miss your target and you may slide into the sea yourself.
• A short charge is often enough. A half-charged slide comes sooner and is harder to dodge.
• Stay off the edge. Once the edge starts breaking, the middle is safer – but that is also where the crowd is.
• A hop can save you. If you get rammed towards a gap, a well-timed hop can land you on the next floe.

Common beginner mistakes

• Standing in one spot waiting for opponents – the floe breaks first.
• Always charging fully. Opponents see the run-up and step aside.
• Running across fresh floes to reach opponents and using up your own escape route.

Frequently asked questions

Can I play Icebreaker alone?

Yes. Bots fill empty slots. Every round each bot rerolls how boldly it rams and how quickly it reacts – so they don't always play the same way.

How many people can play?

Up to eight penguins per match, humans and bots combined.

Do my friends need an account?

No. Typing the code or opening the link is enough. Only your name and sound setting are stored, in your browser's local storage.

Behind the scenes

The arena is a field of hexagons – that way every floe has six neighbours at the same distance, and there are no diagonal shortcuts like on a square grid. The game runs 60 steps per second. The bots get the same input as a human and have to live with the same rules: they check 16 directions for ice that will still hold for a while, how far it is to the centre, and whether there is an opponent nearby who could be pushed off the edge.