Yes. Each game has a different central gimmick. Oracle of Ages gives you a harp that lets you travel back and forth between time, at various locations and ways depending on your progress, and Oracle of Seasons gives you a rod that lets you change seasons... on tree stumps?
You get access to more seasons to switch to as the game moves on. The time travel gimmick is pretty straightforward but just as a successor to Link's Awakening the game is well-designed. The season gimmick lets you do all sorts of things like climb vines that grow only in the summer or walk across lakes that have frozen over in the winter.
There are linked game bonuses for completing one game and then playing the other. I'll avoid spoiling exactly what.
Neat thing about these games is that they were developed by Capcom and not Nintendo.