Bytepath

Bytepath is basically a game of Asteroids on steroids. The premise is mostly the same in that various stuff flies in from the edges of the screen, and you got to shoot and/or dodge that stuff. What sets Bytepath apart though, is it's insane upgrade system. There's several different ships, a few dozen classes, and several hundred passive skill nodes in the form of a Path of Exile skill tree, which it most definitely did rip off, but that's not a bad thing.
These upgrade systems allow for many different paths, allowing you to come up with your own unique way of beating the game. It's quite satisfying to see the synergies between the upgrades play out, and the entire thing is like an incremental game.

Now, what is bad, is that the game kind of fails to do anything with this potential. In fact, just as I'm about to reach the point where I'm just getting these ridiculous(ly fun) synergies up, I also reach the point where I beat the game. You can start over with even more increased power, but there's no real point.
Basically, you need to get to level 40 to win, up to which point the difficulty ramps up at a balanced pace. After that, the game quickly throws everything else it has at you, and if your build is good enough to survive that, you might as well keep playing forever. (Picture related.) I found out I could get to the point where I basically get invincibility off of killing enemies, and that invincibility lasted longer than it took to get it. Couple it with an ever increasing attack speed buff from kills, and I was all set to play until I get bored of gaining points. (As you can see, the points left the screen, my combo counter is over 10000, giving me over 1000% extra attack speed. I'm also at level 100, which is far past the final level of 40.)

Overall, I had fun playing it, but it quickly exhausts itself due to the lack of things to do. In less than an hour, Bytepath becomes a game of just mindlessly holding down buttons, watching as everything before you dies. You stop caring for enemy types and pickups, and you don't really get to feel the potential of this bullet-spewing monstrosity you've created. I would've loved a bigger map, maybe some bosses, and it could have really shined if it actually added a game to the upgrade simulator. But as it stands, it won't make my list. A partial recommendation only - if you want something to do for an hour or two.

PS. This actually opened up my eyes to why Path of Exile might be more fun then I've given it credit for. I haven't looked at it enough from the perspective of it being an upgrade simulator instead of an ARPG.