Games like Dr. Brain: Action Reaction

Kerbal Space Program is a physics-based space simulation game where players build and fly their own space vehicles. Launch satellites, build space stations, and explore other planets in a detailed and realistic space flight environment. With a variety of parts and tools, the possibilities for space exploration are endless.

Kirchhoff is annoyed because nobody appreciates his circuit laws! You get transported to his secret lair and won't be able to get out until you show mastery!

Lobotomy Corporation is a roguelite simulation game where you manage monsters in a corporation inspired by entities from works like the SCP Foundation, Cabin in the Woods, and Warehouse 13. As the manager, you assign tasks to your employees to harness the monsters' energy and expand the facility, all while handling inevitable disasters. With each disaster, chaos ensues, leading to a unique and challenging experience.

"Operation: Tango is a Science Fiction Stealth game that requires two players to work together as AGENT and HACKER in a co-op online multiplayer experience. With great graphics, music, and humor, players must communicate and solve puzzles to complete dangerous missions. A free content update adds new challenges and areas to explore."

In Voyager: Grand Tour, players launch the Voyager space probe through a series of physics-based puzzles, slingshotting around beautifully-rendered 3D planets in missions set throughout the Solar System. Successfully completing missions unlocks mission replays from Voyager's perspective, offering a unique view of the Solar System. With its blend of scientific accuracy and challenging gameplay, Voyager: Grand Tour is a must-play for fans of puzzle games and space exploration.

In Emissary Zero, you explore a mysterious, ever-changing building filled with creepy monsters, relying only on your manager’s support. Navigate the eerie environment alone or with friends , manage resources, complete tasks, and find the Moon to survive and escape. Teamwork and strategy are key to surviving the night.

"Call of Cthulhu: Dark Corners of the Earth" is a first-person psychological survival horror game. Players uncover a Lovecraftian conspiracy in a 1920s town while fighting cultists and suffering from sanity-draining encounters with otherworldly creatures. The game features an investigation system, melee combat, and a limited inventory for a challenging and immersive experience.

We Need To Go Deeper is a 2-4 player cooperative submarine roguelike game, where players dive into a Verne-inspired undersea universe. The Deluxe Edition includes a giant atom-age vessel, a digital art book, and a 35-track extended soundtrack. Teamwork is essential for success, as you explore the depths and battle dangerous sea creatures.

Half-Life 2: Deathmatch is a multiplayer-focused game set in the Half-Life 2 universe, offering both deathmatch and teamplay modes. Experience stunning visuals and innovative physics-based gameplay, where you can manipulate objects and weapons to your advantage. With the option for co-op and single-player modes, engage in fast-paced action, tossing toilets and other objects at friends or AI opponents, but be aware of occasional bugs.

.T.E.S.T: Expected Behavior is a challenging 3D first-person puzzle game set in a sci-fi world, with 119 levels and unique mechanics such as time manipulation, curved space, and body possession. The game features classic puzzle elements with new twists, and requires quick thinking and logical reasoning to save the human race. With a non-linear level map and deep mechanics, players will need to continually adapt to unfamiliar situations and explore the game's rules.