More browsing paths
Play Mach-9 (bootleg of Vulgus) (Hack · ulgus) Online
Mach-9 (bootleg of Vulgus)
Play Mach-9 (bootleg of Vulgus) online. Dodge through enemy formations and replenish the limited cannon with POW items.
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 Mach-9 (bootleg of Vulgus)
Quick start
- Move the ship around incoming enemies and shots.
- Use the regular gun for sustained fire.
- Spend cannon ammunition on useful lines of enemies.
- Collect POW items to restore the limited supply.
Controls
Joystick: move. Shot: fire the ordinary gun. Cannon: fire the limited secondary weapon. POW items replenish cannon ammunition.
Mach-9 (bootleg of Vulgus) — About this game
Mach-9 (bootleg of Vulgus) is an exact registered version in this game family. Vulgus sends its spacecraft through alternating planetary surfaces and space fields without a conventional stage-ending structure. The ordinary gun has unlimited ammunition, while the separate cannon consumes a limited stock replenished by POW items. Formations make the powerful weapon useful for more than emergency defence, since lining up several enemies can increase its scoring value. Surviving depends on balancing aggressive fire with room to dodge as the repeating journey becomes increasingly difficult. Version-specific changes to characters, stages, timing, difficulty, balance, graphics or hidden content are not inferred where the registration does not document them.
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.