found in games like Konami's own Yu-Gi-Oh! series. In addition to a turn-based tactical combat layer, the X-COM series also possesses a real-time 3D strategic layer, complete with global defensive map as well as a technology tree that the player must research in order to unlock new weapons and armor. Jagged Alliance 2 features a country sector map with fortified towns and roving bands of enemies that must be defeated before entering the capital city of Meduna. Knights in the Nightmare (2009) combines elements of traditional tactical RPGs with bullet hell–style shoot 'em up gameplay. Sega's Valkyria Chronicles (2008) blurs the line even further by incorporating tactical RPG gameplay with both real-time strategy and third-person tactical shooter elements, including over-the-shoulder manual aiming and a cover system. This has led to the game being described by one source as "the missing link between Final Fantasy Tactics and Full Spectrum Warrior." In an interview with Eurogamer, X-COM developer Julian Gollop mentioned how surprised he was how close Valkyria Chronicles was in design to his cancelled game Dreamland Chronicles. Infinite Space (2009) by PlatinumGames is a hybrid of tactical RPG, real-time strategy, and space simulator. The 3rd Birthday (2010), the third game in the Parasite Eve series, features a unique blend of action role-playing game, real-time tactical RPG, survival horror and third-person tactical shooter elements. Dead State (2014) is a turn-based RPG developed by DoubleBear Productions and Iron Tower Studios set in a zombie apocalypse scenario. Players are tasked with leading a group of survivors living in a shelter in the fictional town of Splendid, Texas. Dead State mixes tactical combat and RPG character development with survival horror and base management elements. An "enhanced edition" was released in 2015 under the name, Dead State: Reanimated. Full-fledged CRPGs A number of "full-fledged" computer role-playing games could also be described as having "tactical combat". Examples from the classic era of CRPGs include parts of the aforementioned Ultima series beginning with Ultima III: Exodus (1983); SSI's Wizard's Crown (1985) and The Eternal Dagger (1987); the Realms of Arkania (1992-1996) series based on the German The Dark Eye pen-and-paper system; and the Gold Box games of the late '80s and early '90s—many of which were later ported to Japanese video game systems. Other examples include Troika Games' The Temple of Elemental Evil (2003), which features a highly accurate implementation of the Dungeons & Dragons 3.5 edition ruleset;