Video game RPGs are like choose your own adventures. The author writes all sorts of paths that may or may not be followed by said readers. Adding a few more small one-pagers for random encounters is not that much extra work.
Think more like this.
If you go left on this path, turn to page 14.
If you go right, turn to page 18.
Turns to page 18. It reads, Roll a dice and consult the table below.
Rolls dice, consults table, and it says go to page 30. On page 30, it's a random encounter. One page event. Fights slimes. At the end, it says, "return to page 18 and roll again. Reroll page 30 result."
