Games like Hex-a-Decimal

"Infinifactory is a single-player simulation game with a sci-fi plot, set in a 3D environment where you build factories for alien overlords. Its gameplay involves designing and optimizing production lines, with a story-driven campaign and sandbox mode. With historical charts, Steam Workshop integration, and plenty of humor, Infinifactory provides a masterful atmosphere and high replayability."

Meld is a mind-bending puzzle game featuring 200+ levels and a build-in editor so you can create your own and play levels made by others!

"GridRoad is a simulation game currently available on Steam, previously on itch.io. As a single-player, you have 2-4 hours to optimize traffic flow on 13 levels, with more content updates promised. The game challenges you to improve frustrating junctions and create the most efficient traffic system."

For years, Cebba has been searching for a worthy mind to inherit her title of Puzzle Maker. She has seen countless others try and fail as they are thwarted by her many trials. Yet, as you stand before her grid of puzzles, she wonders if you may be the one to take her place… The Puzzle Maker: Cebba’s Odyssey is a strategic puzzle game that dares you to solve over 200 levels of grid-based challenge…

"Circuits" is a single-player musical puzzle game with good mechanics and spectacular graphics, known for its exceptional soundtrack and grinding nature. An upcoming update, "Circuits Composer," will allow players to create and share their own songs through the Steam Workshop. The game is set to become more expensive after the update, which will introduce a level editor for user-generated content.

"Preserve is a single-player Sandbox puzzle game with stunning visuals and an amazing soundtrack. As a nature-building game, your goal is to create and sustain a thriving, diverse ecosystem with vertical map expansion and multiple biomes, each with unique challenges and inhabitants. With various game modes available, players can enjoy regular gameplay or participate in challenges for an added layer of complexity."

Terraform is a turn-based puzzle game set in the future where you alter over 200 planets to allow for settlements and forests to thrive. Use various tools and weather conditions to manipulate the hexagonal tiles that make up the planets, and deal with natural disasters. The game features a level editor and Steam workshop integration for sharing community planets, and takes you on a journey from university to taking down big corporations.

Radiis is a turn-based strategy game focused solely on building placement and territory expansion. The game offers a robust campaign mode with over 20 hours of content, as well as a skirmish mode with randomly generated maps. Players can compete against up to 16 opponents, either AI, local players, or through Remote Play Together, with difficulty settings to match their skill level. The game also includes a map editor and supports multiple languages.

"Auro: A Monster-Bumping Adventure" is a turn-based strategy game focused on "Bumping Tactics," where you guide Prince Auro through procedurally generated dungeons, using tactical spells to outmaneuver monsters and bump them off-screen. With deep gameplay, emergent complexity, and nine spells to master, Auro offers a challenging single-player campaign. This polished version, developed by Dinofarm Games, promises a unique gaming experience.

"Golf Peaks is a relaxing puzzle game that combines golf with card mechanics. Play your way through 120 levels across multiple locations, using cards to move the ball and avoid hazards. With a zero understanding requirement for golf, anyone can jump in and enjoy."