Cubether Lead the cubes to solution comes from Michal Barszczewski.  I stumbled on his game on twitter: https://twitter.com/mandigondo  and was immediately intrigued.
 Cubether is a 'minimalist' game. This moniker has become fashionable among very good puzzle app designers.  Essentially: play the levels and discover how the pieces move.
The object is to get the green pieces to merge and then get home. Green can only travel up/down.
The blues pieces can only move horizontally.
The orange pieces can move up/down & right/left.  The pink moves diagonally only.
The key thing is that pieces can swap. A green, which is above a pink, can swap down.
Cubether is smart, sophisticated and pretty hard.  
Michal: your game is a home run!
https://apps.apple.com/us/app/cubether/id1486743100
http://mandigondo.com/press/sheet.php"p=cubether

Other 'Minimalist' games
Shapecraft
"klocki""Hook"oO"PUSH"Up Left Out
NABOKI
Dotstep Minimalist
turn,maze cubecohex
-look-
SiNKR
Quaddro 2

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