This concise package may have only two play modes, but you'll get a lot of mileage out of both. Classic mode plays in the same way described above. You can start from any of the game's first 20 challenging levels and adjust the speed of the falling pills to suit your liking. Or you can start from level one and plow your way through to the end. Either way, the replay is tremendously high.

A second mode, Vs. CPU, has you playing against the computer that's also attempting to clear the same board located on the upper screen. When either you or the CPU clears two lines or more with a single pill, it sends pill fragments falling down the opponent's screen to mess up their finely constructed virus-clearing operation. These two modes are quite enjoyable, showcasing how the original gameplay formula has stood up so well over time. A multiplayer mode is the only thing missing, and the decision not to include it is a lamentable one. Since the game is so small and reasonably priced, it's likely to find a home on many players' DSi systems - providing even greater reason to throw in even a basic wireless competitive feature.

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At five bucks, Dr. Mario Express is a great value for a classic game. It's still tons of fun after all these years, and being able to boot it up right from the DSi's internal menu without fiddling with cartridges makes it a perfect choice for quick play sessions or marathon bouts of virus pummeling. Despite being a little light on content, the core game is intact and it's seriously absorbing. Do yourself a favor and don't miss out on this one.

By Nathan Meunier
CCC Staff Contributor