Rollaround

The player controls a ball which can move in the four cardinal directions and also jump. Jumping is necessary to traverse gaps between tiles and evade enemies. There are six kinds of target tile (shown at top of screen) but not all of them feature in every level. There is a quota for the exact number of tiles of each type that must be touched; if this is exceeded the level cannot be completed. Certain tiles operate as switches; touching them will change the arrangement of tiles on the screen. Certain exits are only revealed when the nearest tile is touched. Various enemies will try to kill the player; they must be evaded or jumped over. Falling off the map is also fatal. There is also a time limit.