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Play HAL21 (English) Online
HAL21
Play HAL21 online. Aim the forward crosshair at ground targets while using ordinary shots against aerial enemies.
Browser play
Arcade — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| RetroPad A / B / X / Y | Z / X / A / S |
| L / R | Q / E |
| Insert coin | V |
| START | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play HAL21
Quick start
- Steer around incoming enemies and attacks.
- Fire ordinary shots at targets in the air.
- Line the forward crosshair up with a ground target.
- Use the bomb attack to strike that marked position.
Controls
Directional control: move the craft. Shot action: fire at airborne enemies. Bomb action: attack the ground position indicated by the crosshair.
HAL21 — About this game
HAL21 divides its airborne battle between enemies in the sky and targets on the ground. Ordinary shots handle the aerial opposition, while a separate bomb attack lands at the crosshair ahead of the craft. Keeping that marker over a ground target requires a different approach from lining up a passing aircraft. Large enemies are assembled from smaller sections that fly away when struck and then reattach, making their movements another hazard to watch while continuing through the scrolling battlefield.
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
- 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 · arcade
- 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.