yes you would need the original morrowind game, these are the two expansion packs for it, which adds a ton of content, bloodmoon adds an entire huge island, and tribunal adds a portal to another land. Both add tons of new content ( weapons, armor, monsters, quests, etc.) hope that answers your question/s
This is for the PC, with the requirements it has any computer nowadays will definitely be able to run it, i remember playing this on my old gateway a few years back lol...and that only had half a gig of RAM