1. Gameplay - it must be fun to play first and foremost.
2. Replayability - truly great games that you want to play again and again.
3. Story - It needs to be epic if possible, but if gameplay is masterful, a good story is alright,
4. Presentation - Depends...
5. Sound - Epic music is needed but its the least needed out of the above.
JRPG...
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Great idea for a thread Xxain.