I have Forsaken on the N64, and it's a good game (and the only Descent style game for the N64), plus it has bots (computer controlled enemies) in multiplayer, which is always a bonus.
But the game has some bad design decisions, too. First of all, you don't choose the skill level directly, the skill level you play at is determined by how quickly you complete the first level. Much worse, you can only save the game every few levels. And the number of bots you can play against decreases according to the number of joypads that are plugged into the N64 (i.e. if you have one joypad then you can play against three bots, if you have two joypads (even though no one is using joypad two) then you can only play against two bots, etc). And even though every rider/craft you can choose at the beginning of the game has different attributes to slightly alter the gameplay, the N64 version doesn't tell you the values for the attributes, though the PC version of the game does. Why they chose to hide this information from the N64 players baffles me.
And this is a very minor criticism I know, but considering how great the game looks (by N64 standards), then it's surprising that there is a noticable clipping error in the opening cutscene. Much more annoying is that the cutscene is unskippable, but it's sill not nearly as annoying as the problems I've listed in the above paragraph, plus it's been years since I play the game, so there might well be more flaws that I've forgotten about.