In general, Tabletop Games are designed with at least 2-3 players in mind. Often there's no way to automate the physical base game, needing human players to make the decisions for each side. In the case of many Tabletop RPGs, a Game Master is required to full the various roles that the players could not, otherwise the story would be spoiled.
But Solo Tabletop Games avert this - they could be played with just one player.
So why would anyone play them alone? Well, someone could be they live in a small town where few share their interest in Tabletop Gaming. Others just want to be alone. Though many probably just want to get the most use out of their purchases (Most hobby Tabletop games can cost $20-50, at least).
Whatever the reason, games can make this possible because of their mechanics: dice rolling and separate card decks that determine what sort of challenges or effects that occur. Others provide a solitaire variant, turning a game into a self imposed challenge. Another way is the game comes with an "AI" - in this case, a set of actions and rules that trigger based on what card is drawn, roll results, or player decisions.
There's plenty of House Rules by fans to allow their favorite games for solo play. To help narrow things down, examples listed as variants should be official.
- The 2005 version of Arkham Horror and its spin-offs Elder Sign and Eldritch Horror are listed for one to eight players. Game encounters and events are made by a separate deck of cards, while a character template covers the actions of the Big Bad.
- Chainsaw Warrior was marketed as a "Solo Board Game'' right on the box, though its main components are cards- the board was just used to track the player's status. Here, the player is a cybernetic supersoldier who must save New York from a zombie apocalypse by closing a dimensional rift within an hour.
- The 2011 version of Mage Knight allows one to four players. For solo play, there is a simulated player.
- Tiny Epic Galaxies has the players in the role of an expanding Space Empire. The retail version includes a solo option, by having several different AI boards. The difficulty of these Rogue Galaxies go from Beginner to Epic.
- XCOM: Enemy Unknown - the Board Game is for one to four players, who battle against aliens whose actions are determined by chance. There is also an app required, which gives random events and helps with combat calculation.
- The Omega Virus allows one to four players. The antagonist is controlled by a talking electronic console placed in the center of the board, making solo play akin to a computer game. A solo player only misses out on the chance for player characters to attack each other — and hear the Virus comment on the brazen lack of cooperation.
- Minion Hunter is a cooperative board game for one to six players. Enemy activity is controlled entirely by dice rolls and a deck of shuffled cards.
- Several standalone Warhammer 40,000 Gaiden Games have solo options, including Execution Force and Bommerz Over da Sulfur River.
- The Piecepack Wiki has a list of single-player piecepack games.
- Solitaire with its many variants, using a deck of standard cards. The Klondike version is the best-known type of Solo Tabletop.
- Death Angel is solo or co-operative. Events are determined by a deck of cards, and the genestealers just keep on attacking automatically.
- Flip City is listed for one to four players. Using variant rules, every time the player reshuffles their deck, they remove one card from the common pool. The player must achieve a victory condition before the card pool is empty.
- Friday is a solo-only deckbuilder, with the player as the titular character trying to help Robinson Crusoe survive.
- The Deck Building Game Legendary has a solitaire-only spin offs based on the ALIEN and Predator movies.
- Fantasy Flight Games' The Lord of the Rings: The Card Game is played by either 1 or 2 players. Encounters and enemies are drawn from separate decks.
- One Deck Dungeon is an RPG-style card game in the style of Roguelikes. The titular Deck contains all the monsters and treasure cards, and the Boss Monster is a template that is played when the players reach the end.
- The Pathfinder Adventure Card game is a Card Game/RPG hybrid that could be played solo. A series of cards - the Adventure Path - decide what other cards the player will encounter- monsters, locations, and cool stuff for the players.
- Race for the Galaxy gained a solo option with The Gathering Storm expansion. Here, an "AI" template using dice and chits to simulate an opponent.
- The Oniverse games are all solo/co-operative, set in a dream world with an Art Brute aesthetic.
- Onirim uses a single deck of cards to simulate a Dream maze. The player must make combos or special cards to navigate the maze, find all the door cards, and get out before the deck is empty. Opposing the player are Nightmares that forces card loss, and in general make it more difficult to succeed.
- Sylvion is a tower defense game, where the cards are arranged form the outline of a grid and the enemy cards move towards the target. Not only is the enemy are self-running, the game also comes with expansions and rules to increase the difficulty.
- Star Realms and its fantasy spin-off Hero Realms have official solo/co-op challenge cards. These challenges automatically attack, then removes a card from the trade row. A new card is added, and another effect occurs based on the drawn card's alignment.
- The publishers of Thunderstone released an official variant - with a few rule changes, the single player can play the deckbuilder without the need for others. It helps that the enemies also have their own deck and when drawn a laid down into a row.
- XenoShyft, being basically a tower defense game, can be played solo. The enemy cards are drawn from a separate deck, and the player fights each drawn card down a line.
- Ani-Mayhem could be played solo, since Disaster cards would activate either right away or before the player could make any moves.
- Magic: The Gathering has published three solo/co-operative Challenge Decks for its Theros block: Face the Hydra, Battle the Horde, and Journey into Nyx. Each deck has their own unique cards, and is self-running with its own special rules. The player wins depending on if they fulfill the right conditions.
- The Mythos CCG is based on the Cthulhu Mythos. There are solo rules in which events and threats are placed in a separate deck. When the player moves to a new location or passes a turn, the Threat deck activates. Here, the player must complete his Adventures before running out of Sanity points.
- Surprisingly for a CCG from 1999, the Tomb Raider CCG had solo rules. Avoiding the problem of most card games based on video games, Tomb Raider was able to recreate the exploration and adventure aspect.
- Castellion, set in the Oniverse, is a solo/co-op title laying game. The player must use their tile's abilities and their layout to protect their castle from invaders.
- The Dungeon Masters Guide in the 1st Edition of Advanced Dungeons & Dragons had a random dungeon generator based on dice rolls with notes on how to use it for solo play - as long as the player had a little self-discipline to play any encountered monsters intelligently and keep his and his character's knowledge of traps etc. separate it was perfectly usable.
- Dwarfstar Games in the 1980's released two solo-only roleplaying games: Barbarian Prince and Star Smuggler. Using boards and various pieces to keep rack of the player's progress and options, the games also used a paragraph booklet which detailed information on events and actions. However, this meant the player had to reference the booklet often.
- Steve Jackson Games' Fighting Fantasy books were an early experiment to create single-player Tabletop RPG gameplay by mixing it with the Choose Your Own Adventure format.
- Four Against Darkness is a dungeon crawler designed for solo play only. Rooms, events, encounters and the like are decided by dice rolls and roll result tables.
- Mythic Role Playing features independent Game Master Emulation rules composed of charts and tables that allow a player to randomize events with dice rolls. The GM Emulation rules outshine the game itself and are highly recommended by solo roleplayers.
- In the official rules for the Pocket Edition of OGRE has this option: just have the titular supertank head straight for the objective and attack anything in range. All the player has to do is roll the dice for it. The official website also provides variants to decide the Ogre's actions - including using cards or dice rolls.
- The States of Siege series by Victory Point Games is a series of historical solo scenarios. Hapsburg Eclipse and Ottoman Sunset deals with World War I, with the player taking the roles of Austria-Hungry or the Ottoman Empire, respectively.
- Osprey's The Men Who Would Be Kings includes an option to play against "Mr. Babbage" who is unfortunately not present in the club, but has left a series of rules according to which he plays his miniature wargames. There are some basic concepts (always assault if possible when playing natives) and tables to determine whether an opposing unit flees the table or regenerates.