I have an advice to give to some of the developers. About the keyboard controls, more precisely about direction controls for characters.
Please use the up/down/left/right arrows, not the w/a/s/d keys.
In some countries, we do not have "qwerty" keyboards, but "azerty" (France), "qwertz" (Germany) or others (Italy, Portugal...).
See the map at the top of this page : https://fr.wikipedia.org/wiki/QWERTY
So for example, I am French, and my keyboard is an "azerty".
Games with the wasd controls for directions are really awful to play for me, I am not used at all to these controls, and I keep making mistakes (with an azerty keyboard, zqsd would be OK).
I simply gave up playing some good games just because of this.
Anyway, I have not finished to play all the games, but except this problem on some of them (which is not a problem for everyone), all the games I played were great.
Congratulations to all of you.