 Throughout the levels are scattered large spheres and cylinders , which the player can roll when crushed appropriately . These can then be used as platforms or to depress switches . Jigsaw pieces can be collected to reveal concept art and extras in the game 's menus . Some of Danny 's " thoughts " , represented by glowing neon icons on the walls of the level , are only activated when the level is crushed in a manner that does not obscure them . Some thoughts allow Danny to jump higher or stop time . Once the player completes each level , they are graded by the duration of Danny 's stay on the level , how many times Danny " woke up " , and a bonus for collecting all marbles , the jigsaw piece , and a hidden thought trophy . The thought trophy , once completed by crushing , unlocks a level 's special challenge mode for later play which requires time @-@ limited completion of the level with an allotted number of crushes . 
 Throughout the levels are scattered large spheres and cylinders , which the player can roll when crushed appropriately . These can then be used as platforms or to depress switches . Jigsaw pieces can be collected to reveal concept art and extras in the game <a href='null_genetive' title='1'><mark>'s</mark></a>menus . Some of Danny <a href='null_genetive' title='2'><mark>'s</mark></a>" thoughts " , represented by glowing neon icons on the walls of the level , are only activated when the level is crushed in a manner <a href='null_relcl' title='3'><mark>that</mark></a><a href='uninflect' title='4'><mark>does</mark></a> not obscure them . Some thoughts allow Danny to jump higher or stop time . Once the player <a href='uninflect' title='5'><mark>completes</mark></a> each level , they are graded by the duration of Danny <a href='null_genetive' title='6'><mark>'s</mark></a>stay on the level , how many times Danny " woke up " , and a bonus for collecting all marbles , the jigsaw piece , and a hidden thought trophy . The thought trophy , once completed by crushing , <a href='uninflect' title='7'><mark>unlocks</mark></a> a level <a href='null_genetive' title='8'><mark>'s</mark></a>special challenge mode for later play which <a href='uninflect' title='9'><mark>requires</mark></a> time @-@ limited completion of the level with an allotted number of crushes . 
Throughout the levels r scattered large spheres and cylinders , which da player can roll when crushed appropriately . These can then b used as platforms or to depress switches . Jigsaw pieces can bbcollected to reveal concept art and extras in the game  menus . Some of Danny  " thoughts " , represented by glowing neon icons on the walls of the level , are only activated when the level is crushed in a manner do not obscure em . Some thoughts allow Danny to jump higher or stop time . Once the player complete each level , they are graded by tdaduration of Danny  stay on the level , how many times Danny " woke up " , and a bonus fir collecting all marbles , thdaigsaw piece , and a hidden thought trophy . Thedaought trophy , once completed by crushing , unlock a level  special challenge mode for later play which require time @-@ limited completion of the level wid an allotted number of crushes .