Our game-RPG
-active turn based battle system
-4 stats (strength, stamina, agility, intelligence)
-up to 4 party members in a battle
-8 classes and the ability to change class at will
-over 500 usable weapons and armor
-over 100 usable items
-large world map
-4 major cities with 20-30 buildings each and 50+ NPCs
-8 dungeons
-6 hidden bonus dungeons designed to challenge experienced players
-epic story about a dragon conquering the world through the power of magic crystals
EDIT: this is actually a little bit deeper into design that at the beginning. You wouldn't have specific numbers until a later phase. A more accurate example of a game plan at it's earliest stage is:
Hidden content (Click to reveal)Our game
-RPG
-active turn based battle system
-4 stats (strength, stamina, agility, intelligence)
-multiple party members in a battle
-multiple classes and the ability to change class at will
-many usable weapons, armor, and usable items
-large world map
-multiple major cities with a large number of explorable buildings and interactive NPCs
-multiple dungeons
-multiple hidden bonus dungeons designed to challenge experienced players
-epic story about a dragon conquering the world through the power of magic crystals