
Operation Echo Wave is an ambitious single player adventure and is the precursor to Centurion. The game centers around Dr. James Troy as he embarks on an important mission to change history by preventing the Black Mesa disaster.
It’s been two weeks since the Black Mesa disaster and Dr. Troy, friend, confidant and fellow employee of Gordon Freeman, has found himself incarcerated in an unknown location for the majority of that time.

One morning he’s awoken by the sound of alarms and explosions. His cell door is blown and he makes his escape. Following this dramatic escape, James Troy learns
that the Centurion Science Research Vessel, a colossal spacecraft which was stationed in Xen was also struck by the devestating resonance cascade. Now, crippled and consumed by deadly alien lifeforms, it’s emergency systems take over and plot a new heading, Earth.
The adventure takes place aboard the Centurion, where scientists have devised a way to send our hero back in time order to avert the Black Mesa disaster. If our
hero is unable to change history then he must find a way to destroy the Centurion before it reaches Earth. With deadly aliens, security systems, lethal
hazards, military death squads and the meddlings of a rogue Doctor, the future looks challenging!
- New musical score, composed by Epitaph and Ruins of Amber keyboardist Owen Burne.
- New weapons.
- New Textures.
- New friendly characters to interact with.
- New Military squad, prepared for space combat.
- New Assassin death squad, who also have adjustments for space… they now have jet packs!
- New Xen monsters, as well as old ones.
- Terrifying Nether-World monsters, so it’s not all Xen monsters!
Currently there are no recommendations
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7th October 2004






























22nd February 2006
well, i liked the idea on the ‘sneak-’em-up’ and got thru that to the dam/medi-pak. Then it loaded. then it crashed my PC. Shame, looked like fun…
28th August 2006
where can I download it?
28th August 2006
You can’t it’s still under development. Unfortunately it was categorized incorrectly and I have now edited the post. Sorry to raise your hopes!
Talking about development I haven’t heard anything from the team since December 2005, I hope they are just saving up a huge media release!