I think this is a brilliant idea. It takes the first gamebook and presents it in a completely new light even though the flavor texts are not changed at all. Where once there may have been a random roll, it's replaced with a skill check or an ability check. Creatures are presented with D20 stats instead of their original "bare bones" stats.
It should be noted that this adaptation is meant for solo gameplay - meaning you could roleplay in the D20 system by yourself. You COULD have a DM read the text to you but what would be the point of that since the DM wouldn't make any decisions?
It's a shame the great Gary Chalk art wasn't reproduced but I'm willing to make that sacrifice to see a familiar path with new eyes.
1LR Review - 17 out of 20 - It's a Solid Hit!