Question: What system designed by N. Robin Crossby features at Fandemonium?

Context paragraphs:
HârnMaster: HârnMaster is a fantasy role-playing game based in the fantasy world of Hârn.  The system, like the world, was designed primarily by N. Robin Crossby.

Sea Wolf (missile): Sea Wolf is a naval guided missile system designed and built by BAC, later to become British Aerospace (BAe) Dynamics (now MBDA).  It is an automated point-defence weapon system designed as a final line of defence against both sea-skimming and high angle anti-ship missiles and aircraft.  The Royal Navy has fielded two versions, the GWS-25 Conventionally Launched Sea Wolf (CLSW) and the GWS-26 Vertically Launched Sea Wolf (VLSW) forms.

Umnumzaan: The Umnumzaan is a folding pocket knife manufactured by Chris Reeve Knives of Boise, Idaho, and designed by Chris Reeve.  The name "Umnumzaan" is derived from the Zulu language, meaning "Head of the family," or "Boss" (colloq.) , a tribute to Mr. Reeve's South Africa origins.The Umnumzaan was designed to meet the needs of operators seeking a heavy-duty folder capable of handling heavy use and even abuse.  Building upon the Sebenza’s success, the Umnumzaan features: a stronger pivot joint, a thicker blade, a different blade grind with a reinforced tip, improved ergonomics, thicker titanium handles, a thicker titanium lock bar, a stronger ceramic ball detent system, a larger titanium spacer (sometimes called a “stand off”), a phosphor-bronze washer system designed to act as a ‘dry-sump’ to retain lubrication and keep dirt out, an oversized ambidextrous-thumb studs & extended lock bar to aid operation when wearing gloves, a lanyard pivot joint that uses pivoting lanyard tie bars, and a deeply textured grip.

Ya Zahra air defense system: Ya Zahra (Persian: یا زهراء, O Zahra) is an air defence system designed by Iranian engineers.  It is in fact a domestically built upgraded version of French Crotale missile system.  This system was designed to enhance Iran's short range capabilities in the field of air defense and equipments.  Unlike Raad which uses 3 Taer missiles, "Ya Zahra" uses 4 light missile launcher as a default structure but is able to form a cluster missile launcher network.  The system is designed in a short period of time according to Iranians, the commander of Khatam ol-Anbia air defense base brigadier general Farzad Esmaieli: ""This low-altitude missile system has been designed and produced in a short period of time based on domestic needs.  Ya Zahra missile system's capabilities include deployment under all types of weather conditions and on different lands as well as its mobility"".  This system was successfully tested in Defenders of Velayat Skies 4 air defense drills.  The time of replacing missiles batteries and the engagement altitude are much less than Raad.

Fandemonium (convention): Fandemonium is one of southwest Idaho's sci-fi, anime, and gaming conventions, created to bring multi-genre conventions to Idaho.  Held annually in Nampa, Idaho at the Nampa Civic Center, the convention takes place during the first full weekend of August.  The convention has featured role-playing games such as "Dungeons and Dragons" and "HârnMaster", cosplay groups and competitive contests for costume designs, collectible card games like "Magic, the Gathering", computer games, and more.

Hârn: Hârn is a campaign setting for fantasy role-playing games, designed by N. Robin Crossby and published by Columbia Games since 1983.

N. Robin Crossby: N. Robin Crossby (May 18, 1954 – July 23, 2008) was the creator of the Hârn fantasy setting and the HârnMaster role-playing game system, as well as dozens of other related works describing the world of Hârn.

Keléstia Productions: Keléstia Productions publishes role-playing materials for use with Hârn, a fictitious setting.  Keléstia Productions was created by N. Robin Crossby, the original creator of Hârn, after a contract dispute with publisher Columbia Games proved irresolvable.

JLENS: The Joint Land Attack Cruise Missile Defense Elevated Netted Sensor System, or JLENS (colloquially, Spy Balloon), is a tethered aerial detection system designed to track boats, ground vehicles, cruise missiles, manned and unmanned aircraft (airborne early warning and control), and other threats .  The system has four primary components: two tethered aerostats which utilize a helium/air mix, armored mooring stations, sophisticated radars, and a processing station designed to communicate with anti-missile and other ground and airborne systems.  Each system is referred to as an "orbit", and two orbits have been built.  The Army-led joint program is designed to complement fixed-wing surveillance aircraft, saving money on crew, fuel, maintenance and other costs, and give military commanders advance warning to make decisions and provide notifications.  The program was suspended in October 2015.

Autostick: The name Autostick has been used both for a Volkswagen semi-auto transmission and a system designed by Chrysler which allows for manual selection of gears with an automatic transmission.  Another similar system designed by Porsche is called Tiptronic.  These systems are also called "Manu-Matic" transmissions.

Supporting paragraphs: Fandemonium (convention) HârnMaster
Answer: HârnMaster