Adventure Island

This game has a big map, a very limited one-word command interpreter (commands like "get" and "drop" ask for the object referred to), not much of a plot, a few tricky puzzles, lots of tedious combat with monsters... on the other hand, the room descriptions are quite atmospheric if terse, and the puzzles (except maybe for the end-game one) are logical. There are some nasty red herrings.

I played this game in the 1980ies, typed it in from a magazine listing in fact, and loved it back then.