Risk

Risk is a strategic board game produced by Hasbro. The objective of the game is "world domination," or "to occupy every territory on the board and in so doing, eliminate all other players." Players control armies with which they attempt to capture territories from other players, with results determined by dice rolls. Two Halo-themed Risk games have been produced, one based on Halo Wars and one on Halo: Combat Evolved Anniversary.

Halo Wars
RISK: Halo Wars Collector's Edition is a Halo Wars-themed version of Risk produced by USAopoly. It features three playable factions - the UNSC, the Covenant and the Flood - with 250 game pieces, and allows players to capture 42 territories in six sectors, battling for supremacy of Arcadia. The pieces include Marines, Scorpion tanks, SPARTAN-IIs and UNSC firebases. The Covenant's pieces are Grunts, Wraiths, and Arbiters, along with Covenant command bases. Flood pieces are Infection forms, Carrier forms, Juggernauts, and Proto-Graveminds. Despite being named the Juggernaut, the Flood unit in question bears more semblance to the Halo Wars Thrasher form in-game unit than the canon Juggernaut enemy type found in Halo: Fireteam Raven and cut from Halo 2.

The game's box art and map were created by Adam Sblendorio. The map's continents and territories were named by Graeme Devine and the team at Ensemble Studios. Devine named one of the territories - Roque - after his daughter. The board game's continent names have since been used in canon media.

The game itself was announced on January 27, 2009, with a trailer released on April 27.

Halo: Legendary
RISK: Halo: Legendary Edition is the second Halo-themed version of Risk, released in 2011 and based around Halo: Combat Evolved Anniversary. It features three playable factions - the UNSC, the Covenant and the Flood. The pieces include Marines, Scorpion tanks, SPARTAN-IIs and UNSC firebases. The Covenant's pieces are Grunts, Wraiths, and Arbiters, along with Covenant command bases. Flood pieces are Infection forms, Carrier forms, Juggernauts, and Proto-graveminds. This game includes three maps for play. The first map is a 3-5 player, 60" Halo ring that allows players to use a wide range of tactics and strategy that allows for long-term games. The second map is a 2-player map that is played on a 30" map of the campaign mission,"The Silent Cartographer", from Halo: Combat Evolved that allows for a fast-paced, strategic game. The third map is also a 2-player map that is played on a 30" map of the campaign mission, "Halo", also from Halo: Combat Evolved, that allows for a strategic, fast-paced game. The second and third maps combine to make the first map.

The rules PDF for the Legendary Edition is hosted online here (backup).