Doctor Who: Worlds in Time

A Sontaran shows an unseen person to the Game Maker and sets the person up to make a game through the TARDIS systems for "the glory of the Sontaran Empire". After he has given a tutorial, he gives the person the freedom to create more games.

A free-to-play mobile game based on the long running science fiction show, Doctor Who. Available on Android and iOS, it was developed by Tiny Rebel Games.

Doctor Who: The Eternity Clock immerses gamers in the universe of Doctor Who, allowing them to take on the role of the Doctor and River Song as they travel across time and space to save the Earth.

Can you keep the TARDIS in motion and prevent it from slipping past your defence and out of the time vortex? Use your arrow keys, buttons or swipe to move the paddle.

Doctor Who: An Unlikely Heist is a puzzle adventure video game developed and published by Tilting Point through Apple Arcade for iOS, iPadOS, macOS, and tvOS.

Power-up your Waypoints to obtain the mysterious Vortex Energy, a crucial force used to thwart the Doctor’s most fearsome foes. Travel to classic locations from the franchise, and team up with your favorite companions! Together you’ll face enemies like the Daleks, Cybermen and many more! Collect character cards and use strange new resources like Kyfred Gems and Henoch Matter to level up your companions. These resources are key to discovering why the Doctor and friends find themselves lost in time.

The appearance of the Metin stones has torn deep rifts through the once flourishing world of the Dragon God. War has erupted between the kingdoms – wild animals have transformed into fearsome beasts and the dead have arisen to bloodthirsty, demonic life. Defend your kingdom and hurl yourself into incredible battles full of action and magic. Raise your weapons against the forces of evil and become a living legend in one of Europe’s biggest MMORPGs!

Spectrobes: Beyond The Portals is the sequel to popular anime-inspired, sci-fi action/role playing game series Spectrobes, for Nintendo DS. Spectrobes: Beyond The Portals continues the story of Rallen and Jeena, interplanetary patrol officers who discover, excavate, awaken and train mysterious fossilized creatures known as spectrobes and then use them to battle enemies. The story revolves around the origins of ominous portals that lead to distant dimensions and a new nemesis who hopes to destroy the spectrobes.

Robots of the Imperium Machina invaded the peaceful planet Merx. Go on an adventure to free your world from them. Stellar Overload is a 3D open-world, blocks-based, FPS, adventure game.

Inspired by Starflight: 100 years ago Terrans were driven from their homeworld by an unknown alien race. The Guardian Starship 'Void of Darkness' was the evacuation fleet's only escort. Upon deploying a prototype weapon against their pursuers, the ship vanished without a trace and the evacuation fleet was catapulted across the universe. Now with the aid of an enigmatic alien race known as the 'Eurians', The Terran refugees have rebuilt their society and launched a new fleet of Starships. Take command of your ship and crew. Trade, explore, survive and engage. You must discover what happened to the starship 'Void of Darkness' before a new threat seals Terran fates forever

Seed was a sci-fi MMO that is considered to be the shortest lived MMO ever, lasting only 149 days.

Star Trek: Infinite Space is cancelled free-to-play browser-based MMO developed by keen games and published by Gameforge. Players would have been able to play as members of either the United Federation of Planets or the Klingon Empire during the Dominion War as depicted in the TV show Star Trek: Deep Space Nine.

Holic is a cute-style MMORPG developed by the well-known online game developer Mgame based in Seoul, South Korea. The game features meticulous scene setting, adorable characters and plenty of action and emotes. In addition, the game is unique for its class revolving system, over kill combat system, man canon, etc.

You can travel between worlds that are connected

Microsoft A.I. Puzzler was a game being developed by Alexey Pajitnov of Tetris fame, and who previously worked on Microsoft Entertainment Pack: The Puzzle Collection. It's official website has at least two snapshots on the Wayback Machine dating from July 28th 2001 to August 1st 2001, with its first inaccessability date being August 9th 2001, which meant that the game was shelved between the August 1st and 9th timeframe. It also used to be mentioned on Wikipedia's List of video games published by Microsoft page with the earliest dated from June 15th 2011 and the latest prior to removal being being October 12th 2020. All that remains is just a scan of the manual.