Zelda: Oracle of Ages and Oracle of Seasons was a diptych release for the flagship franchise, each part of a symbiotic greater whole. If you owned a Game Boy Color back in the day, chances are good that you owned one of these titles and coveted the other. Now that these titles are available on the eShop for six bucks a piece, it's never been easier or more affordable to own them both.
That's a key factor here, because owning and completing both games gives you access to its most exciting feature: a hidden ending chapter that ties these otherwise disparate handheld titles into the greater Zelda mythos. Don't expect to hear names like "Ganon" thrown around unless you invest in both. It was a cool concept back in 2001, and it can still be cool today, if you're a big enough fan of the series.
It's worth mentioning, though, that Ages and Seasons are undemanding adventures that nail the tone of their kin but leave you with little to develop or focus on. You'll accrue less navigational and combative tools than usual at a much more slower rate. Puzzles during dungeons are minimal. And the copious combat that fills the gaps is pretty well effortless. Link's basic sword strike covers a wide arc, and he can pull off attacks very quickly. Vigorous chopping often nets you a victory before a fight truly ever begins.
Some manipulation of the titular ages and seasons in each game's respective world engages more than the rest, but it's still a not-so-fresh take on the dual world mechanic you see in countless other Nintendo games. It's not that nostalgia can't serve well; Oracle of Seasons and Ages doesn't match Zelda's high water marks in brisk combat and clever problem solving. Considering your other Zelda-related options on the platform, only those who fervently remember these two games already need investigate.