You can play Color Tunnel in a99.io as unblocked.
Counter Strike 1.6 is a fast-paced shooting game for fans of Counter Strike
bumper io, bumperio, bumper.io game
You can play Krunt.io in a99.io as unblocked.
Vanar.io is a 2D multiplayer game in which you are a spaceship that shoots other spaceships. It is not a regular shooting game however. you only have a limited amount of shots before you run out of ammo in your arsenal.