I got this game through ebay a long time ago. It's a text adventure (with a few static pictures) where you and your team of agents go back in time to try to avert Kennedy's assassination. Unlike most text adventures, it's dialogue based. Instead of giving commands to the parser to move, pick up stuff, etc, you talk to your agents and giving them commands as to what to do. The different agents have different expertise, so it's important to send the right agent on each task. The only game I think that's similar to this would be Infocom's Suspended. The parser was fine for the purpose (maybe not quite as good as Infocom's, but good enough). What you typed would be at the bottom of the screen, and the responses from your agents would appear in boxes at the top of the screen, along with some other info. The game included a thick binder that included dossier's of the 100+ historical figures (who they were, their relations to Kennedy, what their schedules were in the days leading up to the assassination), which also served as copy protection. Much of the gameplay revolved around figuring out who to get your agents to talk to, how to talk to them (eg, should you tell them you're from the future? what evidence to show them, etc), to try to get closer to Kennedy's inner circle and, if you did well, finally talking directly to Kennedy himself. There are some other things (eg, you need to figure out how to get money in the past for your agents to do things), but the vast majority is figuring who to talk to, planning when/where to meet them, and how to talk to them. While I did make some progress on my own, it ended up being overwhelming with so many potential people to talk to, and I ended up using a walkthrough Overall, if you like text adventures I'd recommend this game as a different type of text adventure. If you're interested in the Kennedy assassination, I'd also recommend this game (the documentation itself, with the dossiers, is an interesting read).
