Chris Roberts demonstrated his understanding of space physics once, on camera, by doing a "swimming" motion to show how he'd maneuver in space. It was with Richard Garriot sitting next to him with a very face because even if he's a grifting piece of shit, at least Garriot's actually been in space and knows that's silly.
really. i cannot get over what you said. he pretended to "swim". what a ridiculous notion. you may have to be an Einstein-level genius to have thought for the first time in human history about the free-falling elevator shaft vs the elevator shaft with thrust that provides 9.8m/s^2 acceleration, but you don't have to be an Einstein-level genius to understand an explanation of it.
And if you're making a game set in space maybe a cursory understanding of these things would be of interest to you?
What if that's how zero gravity works though, considering all mass is affected by the gravity of other masses, wouldn't it HAVE to be zero mass to achieve zero gravity?