I have no idea why they say it's "24 minutes" when it actually gives you 30 minutes. And yes, while there are unskippable cutscenes there is actually a reasonable amount of gameplay.
The whole experience works quite well, though I have no interest paying £35.99, which is what they were asking for. The game is pretty decent for a casual game and performance is great but the thing that REALLY annoys me is the prerendered cutscenes. There is no excuse to prerender in-game graphics, especially when done at a fraction of the quality of the engine itself (it's 1080p and either 24fps or 30fps). It's extremely jarring to go from excellent, fluid 60fps graphics at 1600p to compressed, jerky 1080p video.
Ryse is a game that will be worth picking up on sale and the demo has helped me determine that. It isn't worth paying full price for.
"The price of freedom is eternal vigilance."