It's the Dr. Mario Bros. in ...
Dr. Mario: Miracle CureDrs. Mario & Luigi come to the 3DS! Play using the original Dr. Mario rules, or try Dr. Luigi mode which plays pretty much identically to the new mode in
Dr. Luigi.
Virus Buster returns as well, and there is an online mode. What's new to the game is Miracle Cure Laboratory, a puzzle mode. In Miracle Cure Laboratory, you have to eliminate a set number of viruses with specific guidelines and puzzle challenges -- while interesting, there are only about 50 unique puzzles.
Dr. Mario: Miracle Cure is a good overall compilation, but nothing amazingly new to the series. It was developed by Arika, and released worldwide in 2015.