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Play Zero Tolerance (Europe edition · English) Online
Zero Tolerance
Play Zero Tolerance online. Choose a specialist, clear every first-person floor, map corridors, collect weapons and medkits, and stop the alien infestation.
Browser play
Sega Genesis / Mega Drive — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B / C | S / X / Z |
| X / Y / Z | Q / A / E |
| START / MODE | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Zero Tolerance
Quick start
Choose a Zero Tolerance squad member and clear every floor of the space station and colony. Move carefully around corners, check doors, collect weapons, ammunition, and medkits, and change agents when another specialist's attributes fit the situation. Use the automap to finish each floor methodically, avoid wasting heavy ammunition on isolated weak enemies, and retreat to a clear corridor when several creatures attack.
Controls
D-pad: move forward/back and turn left/right. A: strafe or perform the secondary movement function in the selected layout. B: fire the equipped weapon. C: change or use the selected weapon/item. Start: pause and access map or status. The original manual lists additional combinations for agents, inventory, and doors.
Zero Tolerance 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 · segaMD
- 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.