None

A game whose multi-monitor method is "None" is a game with no multi-monitor support. Members of the forum have researched options for adding multi-monitor support (registry keys, .ini, console, hack, etc.), and nothing has been found.

Ultra Street Fighter IV

The world’s greatest fighting game evolves to a whole new level with Ultra Street Fighter IV. (Source: Steam)

Really, that's all you need to know.

MouseCraft

Ever wondered what a cross between Tetris and Lemmings would look like? Well, wonder no more, 'cause... MouseCraft is here! MouseCraft is an A to B puzzle game where players help mice in their relentless quest for cheese by stacking the world's most famous blocks: Tetrominos. (source: Steam)

Daikatana

In 2455 AD, Kage Mishima used the magical powers of Daikatana, the most powerful sword ever forged, to alter time and establish himself as supreme dictator. You are Hiro Miyamoto, one of the few people on earth who knows what happened. You and your two friends Superfly Johnson & Mikiko Ebihara must travel through time to find the corrupted dictatorship and right the wrongs inflicted on the world.

Metal Gear Solid

Players slip into the role of Konami hero Solid Snake and set out on a government mission to regain control of a secret nuclear weapons base from terrorists' hands. On his quest, Snake must rely heavily on stealth to avoid being seen, but he also has more than 30 different weapons and 20 different items and gadgets at his disposal, such as night vision goggles, minesweepers, explosives, gas masks, and more. An enemy radar display at the top of the screen helps pinpoint the locations of the opposing forces, both human and mechanical. Designed by Hideo Kojima. Originally released on PlayStation.

Shadow Warrior Classic Redux

Enhanced port of the classic DOS game featuring optional visual filters and both expansion packs.

Dino Crisis

Dino Crisis (Japanese: ディノ クライシス Hepburn: Dino Kuraishisu?) is a survival horror video game produced by Capcom, originally released in 1999 for the PlayStation and later ported to the Dreamcast and Microsoft Windows in 2000. It was directed and produced by Resident Evil director Shinji Mikami, and developed by a team that would later become part of Capcom Production Studio 4.

Praetorians

Praetorians is a 3D real-time tactics game based on Crasso's battles in Parthia and Julius Caesar's campaigns against barbarians and Pompeo.
Players are given two options of gameplay. Players may participate as Julius Caesar commanding forces of varying sizes against various barbarian tribes. Alternately, a skirmish can be chosen.

Super Sanctum TD

Super Sanctum TD is a tower defense game originally released for iOS.

Rescue: Everyday Heroes

Do you have nerves of steel and a calm head in times of danger? Then you can join one of the most respected careers in the world in Rescue 2013 Everyday Heroes, from Excalibur’s emergency services PC game range. Rescue 2013 Everyday Heroes is the first fire-fighting simulation for PC & Mac to include genuine British fire engines and ambulances as well as their continental counterparts.

In this fire-fighting simulation game you’ll be rescuing people trapped in car crashes, dousing the flames of burning buildings and even providing emergency medical care to the injured.