I've played all four Time Stories scenarios now with the same group and opinions up until tonight were:
Asylum: this is fucking brilliant.
Marcy: okay, that was different, but why do they want us to play their bad combat mechanism so much?
Prophecy: weren't there puzzles in this game once?
Needless to say, our initial honeymoon with the game was over. Under the Mask was going to be the last go with this group as two of the four are moving across the country next month. We like the Egyptian theme, so there was cautious optimism all around.
This was the best story since Asylum. Marcy and Prophecy don't come close. The new gimmick was clever and made for some funny moments. The art on the cards allowed you to make meaningful decisions based on your character's traits. Somehow (and I think this is REALLY important to whether or not TS is a good experience for your group), we always unlocked permanent maps and items just before our current run ended, which causes hugs and high fives all around.
And then...
We got stuck. For about 45 minutes, it was unclear where to explore. We had seen and done everything. I gave up check google. One player had neglected to grab an item as instructed by the bottom line of text. The item was, of course, a map piece with a new path on it. It was fixed, but our energy had been sapped. The four of us decided to ignore the time units and explore the remaining locations in a relaxed state. It was still interesting enough, but certainly not as entertaining or climactic ad it should have been.
So Time Stories... Play Asylum if you have the chance. Under the Mask is also worth the price of afmission. The other two were not great, cuz I mostly enjoyed the massive puzzle solving. Whatever you do, read the fuggin card.