Knight Lore was followed three months later by Alien 8 and in 1986 by Pentagram. A second engine, Filmation II, was introduced in 1985 and used in two titles, Nightshade and Gunfright.
Knight Lore was succeeded by Alien 8 and then Pentagram, all within a short time frame. A second graphics engine, Filmation II, was introduced in 1985 and applied to Nightshade and Gunfright.