Spacewar!

WAR 44

PDP-6 version from Peter Samsons's DECtape labelled "PSamsonIV". Another file on the same tape claims it's from 1968. Draws on a Type 340 display.

AR69 SPCWAR

ITS archive file with several versions of SPCWAR. They run standalone on a PDP-6 with a Type 340 display, or on the ITS operating system.

340DEF 4          521  1976-11-13 00:32:03
ACSDEF 1          184  1976-11-19 09:06:17
ARITH  1          429  1976-11-19 09:19:48
FRGMTS 10         439  1976-11-13 00:48:33
NEWWAR 164      21985  1976-11-13 01:21:44
SETMAC 12         616  1976-11-13 23:23:59
SPCLRC 163        163  1976-11-05 23:08:07
SPCWAR 163      21765  1976-11-05 23:03:17
SPCWAR PEOPLE      58  1977-07-10 18:27:27
TVWAR  20        3528  1977-04-04 00:09:42

TVWAR 20

From the previous archive file. Runs on ITS and draws on a Knight TV raster display. The file containing bitmap graphics for the ships is missing.

SW.MAC

Stanford AI Lab, 1972 and 1978 versions. For the WAITS operating system; uses both PDP-6 and KA10 processors in parallel. Draws on a III vector display.

Information the LDS-1 version

LDS-1 Spacewar was amazing to watch, though it looked like it took quite a lot of practice to play. There was a box with a row of toggle switches (maybe 16 or 18 of them?) and you used them to control the ships. The ships could move around freely on the screen, iirc there was a star (sun) in the middle of the screen whose gravitational force was a game parameter, and other cool things like that. I don't know of any modern video game anything like it.

The one I saw was at Princeton. Case Western Reserve may have also had one.