After the successful release of Lemmings, the developer immediately follow up it with the sequel "Oh-no! More Lemmings".
In "Oh-no! More Lemmings", there are another 100 levels for us to rescue. The 100 levels are distributed into 5 difficulties.
The levels are "Oh-no! More Lemmings" a lot harder to solve. Some levels require not only brain, but also good reflex in solving it.
In higher levels, there is usually only one way to complete the level. We have to do everything at the right timing in order to get pass the level.
For me, I completed "Oh-no! More Lemmings" in more than 3 months, with each day at most one or two levels solved.
Luckily, there are password to be written down for each level, meaning that we don't need to start from the beginning every time we play the game.
If you have not enough lemmings, you can get more lemmings here :)