BZFlag seems like has a 3D-mode of "Space Invaders".[0,img] [0] https://www.bzflag.org/media https://www.bzflag.org/media [img] https://www.bzflag.org/assets/

BZFlag seems like has a 3D-mode of "Space Invaders".[0,img] [0] https://www.bzflag.org/media https://www.bzflag.org/media [img] https://www.bzflag.org/assets/images/media/screenshots/space_invaders_01.jpg https://www.bzflag.org/assets/images/media/screenshots/space...