If Scrooge McDuck were real, he could probably wave away any copyright issues by flashing a handful of those gold coins he loves to take a dip in. The real world is, well, a bit more complicated than a cartoon, but the story of DuckTales: Remastered now has a happier ending. WayForward's enhanced port of Capcom's classic NES title is now back on the digital stores for systems it launched on in 2013: PC (Steam), Xbox 360, PS3, and Wii U. It can also be played on Xbox One through backward compatibility.
Back in August 2019, Capcom announced that DuckTales: Remastered would be removed from all those digital stores on August 8. Capcom sold the game for one last day at a 75 percent discount, then it vanished.
Capcom must've worked something out with one of the rights holders involved with the re-release of DuckTales (Disney, presumably), and poof—it's here again. If you missed that going-away sale, though, you're out of luck: it's back up to $14.99 on all platforms.
USG's review of DuckTales: Remastered from 2013 found it to be "an enjoyable trip down memory lane," but if you're a bit wary of all the modernized elements WayForward put in the remaster, there's another option out there for you: 2017's The Disney Afternoon Collection, which includes ports of DuckTales and five other Capcom-developed Disney NES games. It's available for PC, PS4, and Xbox One. Sorry, Switch owners.
If you've never played either version of DuckTales for NES and you love '80s platformers, you should probably give it a shot one way or another. DuckTales the game is so beloved that it's "Moon Theme" music was even referenced last year on the new revival of DuckTales on TV. Few game adaptations of cartoons ever get multiple re-releases and the respect of the properties that spawned them, so you know Capcom got something right back in '89 (the "something" was the pogo cane, for the record).