Yaarrgh! Battle Island!

Build by day. Survive the skeleton siege by night.

YAARRGH! Battle Island! is a co-op pirate base-defense survival roguelite where you gather resources, build fortifications, load cannons, and defend a procedural island against escalating skeleton sieges. Play solo or with friends, strengthen your build, reinforce your base, and survive as each night grows deadlier.

Build by Day. Defend by Night.

Every run is a race against time.

By day, you scavenge the island for resources, expand your fort, and prepare your defenses. By night, skeleton hordes attack in increasingly dangerous waves.

Survive longer, grow stronger, and hold the line as the siege escalates.

Fortify Your Island

Build a pirate stronghold that can survive the night.

• Raise walls, towers, bunkers, and choke points
• Craft weapons, armour, traps, and siege defenses
• Repair breaches and reinforce weak points before the next assault

Every structure matters when the horde arrives.

Fight the Skeleton Siege

The island becomes more dangerous every night.

• Face stronger enemies and denser waves
• Adapt to new threats and siege units
• Survive boss-level invasions that can break your defenses

If your base falls, so do you.