TL;DR This game game can become really messy for your eyes, make sure to play in a well lit room or RIP eyes. Also I have no idea how to play with a keyboard.
Besides those two little problems, Dyad is a really interesting game. It becomes pretty addictive once you really get into it because there are so much things that get added in the gameplay as you play. But I'd like a option to have the game running on "Windowed no borders". It'd be super.
Let's get into things. In Dyad, you basically are a little... non identified thing with kinda tentacles (just what I think, maybe it has a name) and you must grab onto "enemies" being little light orbs. You must make pairs of enemies that are the same colors to boost your speed and get more points. That's basically the base of the game.
But it's not only that. Sometimes, you just need to make pairs and finish the level. Sometimes, it's a race and you need to finish is in less time as possible. Buuut, you can also start to "graze" the enemies by grabbing them. A circle will appear around them and then you just need to pass close to them. This'll build up a "lancing" bar, then you'll be able to "lance" on the enemies. This is like a super boost and you can hit the enemies like that to go faster and make the lancing last longer (I think? I'm not sure about this)
Those are the only things I tried so far. There must be some other modes and special things to do. Also the music and sounds are really great.
Since I always have my game controller plugged, I still haven't figured out how to play with a keyboard. But the experience with the controller is really enjoyable and easy to play. You just need the buttons and left joystick. And fingers. And hands. And eyes. And a brain. You get it.
This is the kind of game you'll want to play a level over and over again to master it and get a high score (at the time I'm writing this I hit the 9th place of a level on the global leaderboards after trying a level a few times). The fact that you can edit the way you play the levels after finishing them once ("remix") is really interesting and I really like it. You can even play a non-ending game just to, like, relax or practice without being scared of a game over or the end of the level. But I don't know what some of the things do though.
If you're epileptic this is not the game you want to play at all. As you play, the colors and lights become more intense. I myself am not someone who's really sensitive to that, but at one point I had to take a break because it was too much. I couldn't even play the damn level anymore (the game reminded me of Super Hexagon. Must take breaks while playing this or you just slowly become crazy). Also I'm someone who tends to change windows a lot when I play (to take breaks and all) and when it's full screen it tends to freeze the game and sometimes make it crash. An option to have the game windowed but without borders would be really cool. I don't want to touch the launching options because I don't know if it works just like TF2.
After this kinda novella I can only say "Yes, I recommend this game".