Starting tomorrow, the world’s first MMO shoot-em up game, “Valkyrie Sky,” will enter open beta for three days, and three days only.

After choosing between one of four “RPG style characters,” players can navigate a 3D world, interact with other characters and players, and form a party to engage in some traditional top-down shoot-em up gameplay. Of course, MMO staples such as leveling and item collecting are included as well.

The press release/colorful flyer indicates all potential applicants should head on over to http://www.valkyriesky.net to “join now,” but, as of writing, that site’s not working. Hopefully everything will be up and running by the time Tuesday rolls around.