Lockdown Protocol is a score-oriented shooter/platformer game with multiplayer support and built-in level editor. The game is available for Windows and Linux PCs.

You are a lone scientist in a research facility on automatic lockdown. Fight your way out, collect bigger weapons on the way and blast your enemies into pieces! Beat the high-scores in single player levels or challenge your friends to a multiplayer deathmatch!

Features:

Smooth old-school shooter gameplay in atmospheric platformer environments.

26 single player levels to play and beat the highest scores.

7 multiplayer levels for brutal deathmatches.

Built-in level editor for creating your own levels.

Local split-screen and network multiplayer support.

More information available at the official website.