1. Icosihena Mines. Impossible to get 30% (master the game) without power-ups, and impossible to get 100% even with power-ups, making it unplayable.
2. The four Typing games. Unplayable on mobile devices.
6. Count the Sheep II. On mobile devices it runs at most at 2fps, making the game extremely long and requiring an Intel computer for fast play.
by Piotr Grochowski