Other games combine similar mechanics, but typically belong in other genres. Tactical wargames such as the "Steel Panthers" series (1995–2006) sometimes combine tactical military combat with RPG-derived unit advancement. "Avalon Hill's Squad Leader" (2000), a man-to-man wargame utilizing the "Soldiers at War" engine, has also been compared (unfavorably) to "X-COM" and "Jagged Alliance". "Rebelstar" (1984) and "Laser Squad" (1988) were precursors to "X-COM" created by the same developer, Julian Gollop. They did not, however, feature the statistical character development and strategic map of the later series.