This is so called 'jigsaw' or 'tiling' puzzle, where you choose the number of elements to play with, and set the hardness of the game by yourself. I 'borrowed' this game from a puzzle site called 'Peque'. Basically all jigsaw puzzle games are the same, and are played in almost the same way, and the only thing that changes is the picture. Since these games are easy to make there are millions of them out there today. In this picture we see Jerry reading his favorite book about space. Jerry is so fascinated by it, that his entire room is filled with space motives. His favorite book is about UFOs and he also has a poster on his wall showing a rocket flying to the moon. In this game you can set the number of tiles from minimum 4 to maximum 20. If you click the 'remover', the elements will mix up again. 'guias' and 'sin guias' are lines which show how the tile should be placed. In Portuguese 'guias' means guides. Spoiler: click on the 'resolver' button automatically shows you the solution. The big lack in this game is the fact that there is no 'restart' button to return to main menu.