Nidhogg is a side-scrolling two-player fighting video game developed and published by Messhof. Players duel with swords in a pixelated environment. The game was commissioned for the New York University Game Center's annual multiplayer show, and was revised and demoed at private events over the next four years before its final release. It won Indiecade 2013's Game Design award and the 2011 Independent Games Festival's Nuovo Award. It was released for Microsoft Windows on January 13, 2014, and later ported to OS X, PlayStation 4, and PlayStation Vita. Critics praised the feel of the gameplay and its balance, but considered its single-player mode unsatisfying. Messhof released a sequel in 2017 with a higher resolution art style and additional weapons and arenas.
Gameplay
Nidhogg is a fast-paced two-player dueling game where two players sword fight in a side-scrolling environment. Players can run, jump, slide, throw their swords, and fistfight. The player-character's sword can be held at three different heights: low, medium, and high, and changing the sword's position to hit the opponent's sword will disarm the opponent. Players can also dive kick, wall jump, climb ledges, and crawl. The player continually pushes towards one side of the screen, such that they are permitted a few seconds to run towards their opponent's side while their opponent respawns after dying. The player to reach the end of their opponent's side first wins and is eaten by the mythological Norse serpent Níðhöggr. Nidhogg has four different levels and single-player, local multiplayer, and online multiplayer two-player modes. The game also has a tournament mode and game variants including "boomerang swords". It can be played via a shared keyboard, and its art style has a pixelated aesthetic similar to games of the 1980s, with vivid colors and simple graphics.
Development
Inspired by the 1984 fighting game Great Swordsman, the game was made by indie developer Mark Essen over the course of four years, using GameMaker Studio. It was commissioned for the New York University Game Center's first No Quarter annual multiplayer show and first exhibited in April 2010 as Raging Hadron. The game was delayed as Messhof planned a formal release and later renamed Nidhogg, after the mythological Norse serpent who appears in-game. Messhof worked as the game's only programmer and his time was divided between development and his other freelance and personal projects, graduate school, and a job teaching at University of Southern California. The game languished until Kristina "Kristy" Norindr assisted Essen in founding Messhof LLC, a legally incorporated indie studio, joining as a co-founder and working in a business development role. She led the search for the game's musician. Their list of desired styles always included Daedelus, who they were able to contact through a mutual friend who attended high school with the musician. Daedelus designed some of the procedural elements that trigger the music sequences. Messhof described their process as wanting to "enhance the action" while letting players control the game's tension. He felt lucky to have Daedelus as his composer. Messhof also asked a former student to help him complete the game's netcode, which he deemed to be "totally essential" for the game's future as an eSport. He read about "programming and fighting game structure" over the course of development, which he credited as important towards the game's progress. It was his first attempt at networked multiplayer.
The core concept did not change over the course of development, though the other content did. Messhof limited the game's exposure during this time as he wanted the game to be respected in the fighting game genre and wanted to make sure it was ready first. Messhof himself, however, did not have much experience in this genre. He said that he "spent a lot of time" on the gameplay's feel and designed it to play slowly, where players wait for their opponent to move first, similar to Bushido Blade. He also spent time adding divekicks and cartwheels while improving the melee attacks and spectator experience. Some moves, such as a Yoshi-style "ground pound" and the Karate Kid crane kick, were attempted and removed. In testing, he would observe players and their strategies before attempting to write an artificial intelligence to use similar strategies. Messhof considers the single-player to be training for the online multiplayer, and the online multiplayer training for live matches. He described his process as making "the most fun game" to play with his friends.