Games like Rise of the Triad: Ludicrous Edition

If you finished Rise of the Triad: Ludicrous Edition, the closest matches are Synduality: Echo of Ada, Alien Rage: Unlimited, Half-Life: Uplink, Neptunia Shooter and Ghost in the Shell: Stand Alone Complex - First Assault Online. All 9 share its shooter genre and are ranked by how closely their themes and modes overlap.