Pentominoes

BoardSizes:
   3×20
   4×15
   5×12
   6×10
   
   
How to play
The objective of this game is to tile a rectangle using the 12 different pentominoes. Tiles can be rotated by double clicking (multi-touching on tablet) them. After one complete rotation, the pentominoes will be turned upside down.
Xavier Raynaud. Version uploaded on Tue Jan 8 2019. Code available from https://gitlab.com/xraynaud/pentomino.