https://robjinman.itch.io/pro-office-calculator
It's been 14 months in the making, and 26000 lines of C++ code. Finally, I'm proud to announce my most ambitious project yet: Pro Office Calculator. The game features a Doom-style raycasting engine written specifically for this project. I've never worked so hard on anything in my life!
Needless to say, there is more to Pro Office Calculator than meets the eye. Look for subtle clues to unlock its secrets.
This game is rather niche, so won't appeal to everyone. It contains fairly challenging puzzles, some of which will require a pencil and paper.
Here's a hint to get you started: You might want to take a short break and come back to it.
And a one-word hint for the first real puzzle you encounter: Axioms.
I'm a little reluctant to provide screenshots as it may spoil the game's mystery, but here's one:
Thanks to anyone who gives it a go. I'll try to return the favour :)