Yeah, the "find the yellow key" style gameplay was par for the course at the time, but does feel one dimensional. Half Life changed that, but also System Shock

Yeah, the "find the yellow key" style gameplay was par for the course at the time, but does feel one dimensional. Half Life changed that, but also System Shock (Classic) was a lessor known game of that era that was hugely different on this point. If you like games of this era I'd suggest checking it out. It uses a different control scheme vs most FPS's, one that ultimately the industry did not chose to follow, and that bothers some people, but I think it fits the gameplay and the rest of the game is so compelling it's pretty forgivable even if you dislike it.