Nemesis is an odd game, not because of inherent features of the game, but because of its (non-)connection to the larger series that spawned it. While carrying the Wizardry moniker in the title, there’s no real connection to the original series, apart from the fact that the game has block modus movement like the first seven Wizardry cRPGs and some RPG mechanics. But mostly it plays like an adventure of the Myst-variety.
A big part of the game is about figuring out strange surroundings, machines and puzzles in a landscape mostly devoid of people, like the depopulated Myst series. It’s okay for what it is, but bears no resemblance to the Wizardry series. If you play it because of the name, you’ll be inevitably disappointed. But on its own its quite fun, if you have no problem playing a game fusing elements from RPGs and Adventures.