The game is available at the following link:

V1.6: https://www.myabandonware.com/game/gateworld-the-home-planet-22n#download

V2.0: https://dosgames.com/game/gateworld/

There are two versions of this game online that differ concerning the amount of damage inflicted upon the player. While the newest version (2.00 from 1994) has the difficulty toned down quite a bit, the older version (1.60 from 1993) subtracts way more energy from the player. Most contraptions and some enemies here kill you on instant, but in 2.00 they render minimal damage upon the first hit. It could also be a bug in the latter - not sure about this as there is no information anywhere. The run of Volume 1 was done on version 2.00, while Volume 2 and Volume 3 were done on 1.60. That version difference was not known to me at the time of running Volume 1 and I only discovered that later while practising for the other two volumes. Eventually, I opted for the harder version for Volume 2 and 3 to have more of a challenge. So if anyone is ever going to provide more runs, it is something that will definitely need to be taken into account, if those runs feature different versions than the current WRs.