The following game was not officially released for Sega Dreamcast. It is emulated using AES4ALL beta 4 developed by chui. This is an evaluation of the emulation of the game as well as the game itself.
Using Team RDC's release you can play this game as though it is a commercial game with only a brief loading screen.
Metal Slug X is a remixed version of Metal Slug 2. As such, you can read the review for Metal Slug 2 here. The differences do not significantly change the game to warrant an entire second review. You can read about the differences here. Since I won't be reviewing the game again, I'll just talk briefly about the emulation. Two different versions are included in this RDC pack. One has sound and one does not.
This is the version that everyone is going to want to play. The game runs incredibly smoothly, essentially full speed. There are some stutters in the gameplay when the game needs to load more data from the disc, but aside from that it's smooth sailing.
This is definitely not the ideal way to play the game. The slowdown is bad enough that the game loses pretty much all of its fun. Good luck to you can tolerate the slowdown enough to make it past the second level's boss.
And that's about it, folks.