As PI Tex Murphy, a pretty college girl has hired you to discover the truth behind her father's apparent suicide. Gameplay is fascinatingly different from what we're all used to, which isn't surprising considering the game's age (this was released in 1989, I ♥♥♥♥ you not).
A combination of dialogue 'puzzles,' side-scrolling shooting galleries, room-exploration, and traveling, it's truly fascinating to see what constituted a game in the pre-dawn of the gaming industry. My father originally introduced me to these games, and while I never played them myself in their heyday, I enjoyed watching my father play them immensely. I don't believe he actually ever played this one, though.
One of the components I like most about this game is the way dialogue is used. Instead of choosing statements from a list, you actually need to TYPE your questions. You need not worry if you failed English, however: typing a single name will get you what you need regarding that subject.
Don't leave any stone unturned in the room-exploration portions. Look everywhere, move everything. Otherwise you'll miss something important. In many cases the rooms are protected by an alarm system, which you'll need to disable within a certain timeframe before you're arrested for trespassing.
The shooting galleries are simple enough if you can figure out the pattern. Just be sure to watch your health bar and your ammo count. You health bar will replenish once you've completed the scene, but it would be wise to save before attempting one.
The only gripe I have with this game is its traveling. You're supposedly traveling in your flying car in the Southern California/Nevada area of the future, but the controls are difficult to understand and you'll end up relying on autopilot anyway. Apparently there's a lot more to see and do in this game if you allow yourself to meander, but I don't recommend it unless you've mastered the driving controls.
Overall, this game is old. Duh. But I'm a nostalgic gamer. I'd rather play the original DOOM, Duke Nukem 3D, Unreal, or Half-Life as opposed to the infinite number of Battlefields, Call of Doodies, and Counter-Strikes available today with spiffy graphics and microtransactions (Team Fortress 2 is a rare exception). And you really can't get much more nostalgic than 1989.