im looking for an old 2d maze game for pc

i played this game at a after school club i went to every day after school i started in end of 2nd grade witch was 2010-2011 at the club we had some old PC´s that we could play on however there were only one game on it:it was a 2d maze game that was where you played as a pac man like yellow circle that was moved by the arrows on the keyboard there were levels alot of levels the levels were grid based. there were enimies but i dont remeber what kind i belive there were also some kind of explosive that you could trigger and also stones that would drop if you ate the filler block under and you could push rocks to i really only remeber this and me and my friends really want to find this game. i take any help i can get and sorry for broken english : )

@notan13: spelunky??