If you somehow missed Batman's return to form in 2009's Arkham Asylum and 2011's Arkham city, you're in luck: Starting today, you can now buy the Return to Arkham Collection, which includes both games in one slightly enhanced package. (Arkham Origins can sit and spin, I guess.)
While some have complained that the general "brightening" of both games has dampened their gloomy atmospheres, you can see Return to Arkham's changes for yourself via a video released by the official Batman Arkham YouTube channel.
As it stands, $49.99 seems a little expensive for a rerelease of two old-ish games that could probably be had for a third of that cost elsewhere, but the lack of backwards compatibility in our new consoles makes this a less feasible option. (Unless you're using Steam, where both titles regularly go on sale for $4.99-$9.99.) In any case, if you've got a hankering to collect scores of Riddler trophies, now you can do it all over again, but with slightly better production values.