Adventure Island IV

The series' final NES chapter trades straight lines for open exploration. Adventure Island IV is Hudson Soft's 1994 platform-adventure — the last game ever released for the Famicom in Japan, and a more open, Metroid-style take on Master Higgins' world — and you can play the full game right here in your browser, free and with no download. Explore, unlock weapons, and free the kidnapped dinosaurs. Hit the Play button to start, and read on for the story, gameplay, controls, and tips.

What Is Adventure Island IV?

Adventure Island IV (in Japan, Takahashi Meijin no Bōken Jima IV) is a 1994 platform game released by Hudson Soft for the Family Computer — notably the final game ever released for the console in Japan. It was never released outside Japan, making it a rarity for many Western players discovering it now.

Unlike the linear earlier entries, Adventure Island IV plays as an action-adventure platformer, closer to the later Wonder Boy games: one large, connected world rather than a sequence of separate stages. The evil Eggplant Wizard has kidnapped Master Higgins' dinosaur friends and his girlfriend Tina, so Higgins sets out to free them and stop the wizard for good.

How the Gameplay Works

Adventure Island IV is built around exploration and gradual progression:

• An open, connected world — instead of separated stages, you move forward and backward through a large map, climbing trees and entering doors to find new areas.
• A growing arsenal — unlock a wide variety of weapons as you progress, from boomerangs and spears to a water gun used to solve puzzles and open new paths.
• A health gauge — Higgins can take multiple hits; collect eight food items to restore a heart, and find heart-container fragments (two make a full container) to expand your max health.
• Helpful items — win special items in races and challenges, including an angel/fairy that revives you once where you fell, and a compass that points the way on a map.
• Bosses & dinosaurs — defeating bosses rescues a kidnapped dino friend and opens paths to new regions.
• Password system — unique to this entry, letting you save your progress and continue later.

The result is a more thoughtful, explorative experience than the run-and-jump pace of the earlier games — more about navigating a world and unlocking abilities than racing to the end of a stage.

How to Play

Getting started is instant. Press the Play button on this page and Adventure Island IV loads directly in your browser — free, with nothing to install. Then:

1. Explore the connected world, moving in both directions and entering doors.
2. Collect and switch weapons to fight enemies and solve puzzles.
3. Gather food to refill hearts and find heart fragments to extend your life gauge.
4. Defeat bosses to rescue dinosaurs and open new paths.
5. Use the compass and passwords to navigate and save your progress.

Adventure Island IV plays great on both desktop and mobile. On a computer you use the keyboard (and any USB or Bluetooth gamepad you connect is detected automatically and maps to the NES layout), while on phones and tablets you get a custom on-screen gamepad styled just like a real NES controller — so exploring and fighting feel right wherever you play.

Controls

Here's what each control does, mapped to your keyboard:

A connected gamepad uses the same button assignments.

Tips for New Players

• Backtrack often. This is an exploration game — new weapons open paths in earlier areas, so revisit places you couldn't fully reach before.
• Use the compass. When you're unsure where to go, the compass item points you toward your next objective.
• Switch weapons for puzzles. Some tools (like the water gun) aren't just for combat — they solve environmental puzzles to progress.
• Bank passwords. Since the game is longer and open-ended, jot down passwords so you don't lose progress between sessions.
• Hunt heart fragments. Two fragments make a full heart container — expanding your health gauge makes the tougher areas far more survivable.

Why Play It in Your Browser?

Adventure Island IV is a hidden gem — a Japan-only finale that reinvents the series as an open action-adventure, and a game many Western fans never got to experience. Running it right here means no cartridge hunting and no console setup: just press Play and start exploring. Because it's the genuine Famicom build, you get the connected world, the full arsenal, the password system, and the exploration design exactly as Hudson created it.

Frequently Asked Questions

Is Adventure Island IV free to play here? Yes. Press Play and the full game loads in your browser — no cost, no account, no download.

When did Adventure Island IV come out? It released in 1994 for the Family Computer in Japan — the last game ever released for that console — and was never officially released elsewhere.

How is it different from the earlier games? Instead of linear stages, Adventure Island IV is an open action-adventure: one connected world you explore, unlocking weapons and abilities to reach new areas, with a password save system.

How does health work in this game? Higgins has a heart-based life gauge. Collect eight food items to restore a heart, and find heart-container fragments to expand your maximum health.

Can I play it on my phone? Absolutely. It plays great on mobile thanks to a custom on-screen gamepad modeled on the classic NES controller, and just as well on desktop with the keyboard or a connected gamepad.

Ready to stop the Eggplant Wizard? Press Play and start exploring.