Well, first person is tricky to use, but I've seen it pulled off well on here.
Make sure you don't start every sentence with "I", however. That's a occurring problem with most first perspective stories-not just in storygames.
For example, which paragraph do you like better?
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"I woke up and brushed my teeth. Then, I walked downstairs to go eat breakfast. I was on my way downstairs when I noticed a book left on the stairs. I couldn't recall having ever seen this book before. I picked it up, and that was when everything went black...
I had a pounding headache. I opened my eyes, and I was somewhere else. I was in a forest somewhere. I felt like this had to be a dream of some kind. But...it felt too real to be a dream. I closed my eyes and tried to will my surroundings away, but this wasn't just another bad dream."
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"I woke up and brushed my teeth. Then, I walked downstairs to eat breakfast. On the way down, I noticed a book left on the stairs. I couldn't recall having ever seen this book before. Curious, I picked it up, and that was when everything went black...
The first thing I noticed when I woke, was that I had a pounding headache. Opening my eyes, I discovered I was somewhere else. Trees surrounded me, and I realized I was in a forest somewhere. 'This has to be a dream, right?' I thought. 'But...it feels too real to be a dream...' Closing my eyes, I tried to will my surroundings away, but unfortunately for me - this wasn't just another bad dream."
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The second one should be the better one since it doesn't have all the redundant "I"'s. It's a good one if you want to convey emotion.
3rd person is one of the easiest ones to use imho. However, make sure not to confuse your reader too much with the "he's and she's" :)
For example,
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"He gave her a snarky smile. In response, she just glared at him, refusing to admit defeat. He took a step closer to her, sword raised- when suddenly someone charged into the room. He attacked him and easily brought him down with a single blow.
"Are you alright," he asked her, extending a hand to help her up.
"I'm fine," was her curt response. She took his hand though, and shakily stood up.
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See? It's rather confusing about who's who. XD
And yes. These are terrible. I wrote them in 5 minutes to explain things, you shouldn't expect them to be very good.