ro9 is a turn-based role-playing game in which you get to control the actions of nine different characters at the same time, using only one set of controls for all. The objective here is to get all of your heroes down to the ninth and last level of the dungeon to loot the treasure, although you can still win if some of them succumb to their injuries before reaching the goal.
There are three types of monsters in each level. Humanoids are easy to defeat, while animals or creatures take a couple more shots to kill. Bosses are the strongest, and will take quite a beating before they drop an ankh. Collecting an ankh resurrects all rogues that died on the same dungeon level.
The basic strategy here is to win enemy encounters and increase your level before proceeding down the stairs, indicated by the number of yellow squares inside the window of each hero. The red outline that surrounds each view shows the amount of damage a character has taken, and players are advised to look for a health potion if it starts to turn bright red.