Strife would be kinda difficult wouldnt it? It´s impossible to know who owns the rights to it these days. It´s kinda like Powerslave.
Strife is even more difficult, as Rogue Entertainment was just dissolved in 2001, meaning the assets where sold to whoever wanted them at the time. It is more difficult to know who now have the rights to what, with PowerSlave, we at least know that EA got all Lobotomy Software.
Also, depending on the deal, the publisher was Velocity, which I frankly have no idea who was... but I do not think they are any longer in business either?
Thing is, Rogue didnt own Strife, not even back when they developed it. Velocity owned it, and they didnt sell their IP when they went bankrupt.