Operation ECHO Demo [GZDoom engine game] @xxxvertigoxxx
Operation ECHO Demo [GZDoom engine game]  @xxxvertigoxxx
Uploaded April 2018 | Updated September 2026, 2 weeks ago
I'm putting this under Doom but really it's not. It plays pretty fucking well and definitely has a megaman / metal slug feel to it.

When the full release drops this will be huge. In the mean time check out the demo: gamejolt.com/games/OPECHO/328831
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Operation ECHO Demo [GZDoom engine game]

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