Some things a good RPG needs:
A Level system. Gain X experience, gain a level, become slightly better. Repeat endlessly.
Equipment. Randomly find a +4 Vorpal sword and USE IT!
Monsters: Kinda needed for Leveling and Equipment drops.
Stats: STR, DEX, INT, SPD, MGC, OMG, LOL, ETC.
Narration: Get descriptive! Explode that moment when the hero raises his sword, staring into the weakened and frightened eyes of his enemy. A blur, followed by a "ssshk" sound, followed then by the head of his enemy falling away from its body.
DO MORE LIKE THAT.