Blood II: The Chosen is a first-person shooter computer game developed by Monolith Productions and distributed by GT Interactive, which was later purchased by Infogrames. Released on October 31, 1998, it featured Monolith's new fully 3D engine Lithtech, which was previously used in Shogo: Mobile Armor Division. An official expansion pack was released on August, 1999 under the title of Blood II: The Chosen - The Nightmare Levels.
Unlike the first installment, Blood, which was set in 1928, Blood II takes place in the year 2028, so in addition to conventional weapons and magical items also incorporates science-fictional technology. Much like its predecessor, the game contains excessive graphic violence and a crude style of humour. Work on porting it, and LithTech in general, to Linux, and then later potentially to other systems like Solaris, was being done by employee Jeremy Blackman but was never completed.
In single player mode the player can choose his character among one of the four Chosen. However major plot holes occur if any other character than Caleb is selected: in-game cinematics are not shown and the story does not develop properly. Blood II gameplay is influenced by the choice of character at the start of the game because every Chosen has different marksmanship abilities, amount of maximum hit points and armor level. Caleb, the protagonist of the first Blood, is the most balanced character, being able to use both firearms and magical means with good efficiency.
The game is divided into chapters, each of which is accessible only if the previous one is completed. A total of 17 weapons (some of them usable in dual mode) are available to player, although he has only 10 positions at his disposal and thus must choose which weapons will be included in his arsenal. Most weapons also have a secondary fire mode, for example one that deals higher damage to hostile creatures but consumes more ammunition units. Several power-ups including invulnerability, stealth movement or increased firepower gives the player an advantage over enemies for a limited period of time.
Blood II is primarily focused on the single player experience, but also features a multiplayer mode. Instead of Deathmatch mode, authors decided to change the name to "Bloodbath" because it better reflects the game's title. Each player can choose one of the four Chosen to control during the match - Caleb, Gabriella, Ishmael and Ophelia. Since every character has different abilities, the weaponry they receive at the beginning of the game varies. Players can also customize their characters, giving a score from 1 to 5 to four different stats.