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Play Complex X (English) Online
Complex X
Play Complex X online. Climb the moving platforms, collect ammunition and reach the exit before the flood or air runs out.
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 Complex X
Quick start
- Move with the movement joystick.
- Aim and fire at creatures with the firing joystick.
- Use Jump to reach the moving platforms.
- Collect ammunition squares and continue to the exit.
Controls
Movement joystick: move the scientist. Firing joystick: shoot in the chosen direction. Jump button: leap to another platform. Blue-and-magenta squares replenish ammunition.
Complex X — About this game
Complex X follows a scientist climbing out of a flooding reactor before the air supply runs out. One joystick handles movement and a second independently aims the gun at the creatures obstructing the escape. Ammunition is limited, with coloured squares replenishing the reserve, while the jump action is needed to reach moving platforms. The sides of the screen wrap, providing another route around the room. Reaching the exit with ammunition left also rewards a more selective shooting approach.
Complex X 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
- 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.