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Play Alex Kidd - High-Tech World (US_EU_BR edition · English · Edition 145309) Online

Alex Kidd - High-Tech World

Play Alex Kidd - High-Tech World online on Master System. Solve castle puzzles and cross a ninja forest before the arcade closes.

Browser play

How to play

Sega Master System — EmulatorJS controls

Default Player 1 keyboard mapping. Change keys in Controller Settings.

Console button	Keyboard
↑ / ↓ / ← / →	↑ / ↓ / ← / →
1 / START	X
2	Z

Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.

How to Play Alex Kidd - High-Tech World

Quick start

Press 1 or 2 at the title, choose a new game and confirm with 2. Explore the castle, examine objects with up and speak to its residents to find the eight map pieces.

Controls

Adventure: left/right move, up enter/examine/climb, down descend; 1 map/inventory, 2 advance dialogue/confirm. Forest: left/right move, 1 jump (hold for height), 2 throw stars.

Alex Kidd - High-Tech World — About this game

Alex wants to visit the High-Tech World arcade before its 17:00 closing time. First he must find eight map pieces hidden around the castle, then cross a forest guarded by ninjas and obtain a travel pass in town. Exploration scenes rely on conversations and examining objects, while the forest switches to jumping and throwing stars. Keep an eye on the clock as you work out the route.

Alex Kidd - High-Tech World Game manuals

Cheats

No cheats have been added for this edition.

Player verification and sources

Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.

Browser test and catalogue publication date: October 24, 2026
Browsers and devices: PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
Player engine and core: EmulatorJS 4.3.0-pre · segaMS
Tested by: rwEmulator

Sources and editorial basis

rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.

Editorial policy and sources Trust center EmulatorJS player help