Im really happy that I got this as a free app from Starbucks.
The puzzles are not that challenging (not yet in world D), but the game definitely puts gets you into the zone when solving the puzzles.
Its also really satisfying when you finish a puzzle with that requires a lot of moves and you see the final empty square fill up.
Ive buzzed through the first two and a half worlds in an hour or two, but I dont think the time spent has been wasted.
The game has 14 worlds, so hopefully Ill soon get into the more challenging levels.
KrisuTeam about SEQ, v2.0.2