This is another "one player, two characters" game I have played today. Unlike the other this one is a traditional platformer, including multiple levels with starting and ending points. The levels offer nice challenge, some parts feel hard to get, but you always eventually see the right route - It's essentially about whose turn it is to jump and who will just follow, while of course avoiding a storm cloud if there is one. There's no hurry, so when you reach a safe platform, you can always plan the next, perhaps more challenging move. The visual theme with the sun and moon is a nice idea.
I'd like to invite this game to our contest, the Game Development World Championship!