3D Math - Ultra

This is the best learning game I've ever seen in my life!
This game is worth it price and more.

Finally, for the first time in Steam, someone made an actual math game (not just some number crunching/guessing bs I've seen previously, falsely advertised as something useful for the brain).
This app can actually help you refresh your algebra and calculus "instincts". Although memorizing formulas might be demoralizing (because you'll forget most of the formulas), it'll still help when you'll work with more area-specific formulas and deriving your own expressions for a specific task.

Although I mostly enjoyed the formulas part, there's also plenty of fun little number crunching, memorizing, and logical mini-games.
And I was very surprised to see that the game is in real 3D. I've thought it's just marketing.

It's a good game, but have:
1) soo many glitches and bugs, mostly in the layout of questions (for me always have a glitch in formulas' test);
2) four months that nothing are posted (looks like the game is dead), which is a shame because some resources are missing;
3) the communication of updates are reaally bad: the developer don't announces any social media like twitter or facebook, only have the site, email and discord group [which is too much simple, dont have any moderator or announcement of updates].
Conclusion: I liked the initiative and I understand the game have a small community, but there are a lot of free mobile games (with the same proposal) that is much better. If this game have the updates that at least completes it, I would recommend.