
Most RPGs (and most games with RPG elements for that matter) have mostly followed the same blueprint. A player kills enemies, gains experience points, then uses those experience points to build up their character. Skyrim might not be the first game to employ this particular play style, but the style they used might be the most well implemented.
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This style of leveling up was done in final fantasy 2
I was never a huge fan of the leveling system used in Elder Scrolls as, for me, the leveling up felt anti-climatic; you dumped a point into health, stamina or mana and that was that. Big fan of the new perks system to give more meaning to levels.
is it the unresponsive and clunky controls?
No, the leveling system in Skyrim should not be used in all RPG's. It's definitely not a good one.