Bridge Hopper

There are gaps in the bridge (three gaps in levels up to 6, four from there on), but does that deter pedestrians from willfully treading on, like Lemmings or Sleepwalkers, to their demise? Regrettably, that is not the case. Fortunately for the player, a stopgap measure is available to instantaneously block a bridge gap, all at the press of a key, typing in the number of the gap to cover. Unfortunately, as the people cross one gap and approach the next, the makeshift walkway must be moved.