I absolutely LOVED this game when it first came out. I played with a trackball + keyboard, and the 6 degrees of freedom, paired with an environment where there often was no natural sense of "up" or "down" (zero gravity, inside tunnels) really blew my mind. I experienced a sensation I had never before experienced, almost out-of-body.
For example, you approach a "T" junction, and depending on your pitch angle, the branches may be up/down or left/right. But since there's no natural ground or sky, you can either maintain an orientation memory (I usually did automatically), or you can just let all that go and travel with no sense of true orientation.
Occasionally you reach an area with some signs or printed panels, and then you realize what the regional up/down orientation was; but it didn't matter in zero gravity.
I used a joystick with a four-way hat that allowed simple and intuitive strafing in all directions along with thrust in four directions from the joystick itself. I got devastating with that combo. Spent hours mastering it.
I used to consider it a form of flow-state when you’ve played Descent/Overload long enough that up/down stops being a thing.
It always took a while each session to get to that point, but once you were there it all just starting flowed so damn well, and manoeuvring the tunnels became so much faster/easier.
For example, you approach a "T" junction, and depending on your pitch angle, the branches may be up/down or left/right. But since there's no natural ground or sky, you can either maintain an orientation memory (I usually did automatically), or you can just let all that go and travel with no sense of true orientation.
Occasionally you reach an area with some signs or printed panels, and then you realize what the regional up/down orientation was; but it didn't matter in zero gravity.