Allow me to explain spcol and its functions. 1)Variable=SPHITSP(1st control number(in this case, the player),second control number(the platform if its a sprite or an enemy)) 2)To use sphitsp you need to have spcol set up first. It's quite simple. SPCOL Control number(for the sprite you want to have a detection for but you have to do it for each single sprite you have), True/False(If you (cont)