Try it for yourself, if you dare.
Regardless of the withdrawal, the game is still popular in some circles, and many illegal copies led the game to rise to cult status. The game has even seen re-release on the Nintendo DS.
This ... game ... sees the main characters Giana and Maria progress through a series of side-scrolling levels, much the same as Mario and Luigi. In fact, the first few level designs are carbon copies of the Brothers' first few levels. Totally shameless!
To its credit, this platformer does has a few surprisingly good aspects. The power-up system is far more extensive, for one. While the first allows a sister to destroy blocks by jumping beneath them, and the second arms your girl with a lightning bolt (allowing you to fire projectiles at enemies), everything after that is great fun. Some of these include temporary freezes, immunity to fire, homing missiles (that can even get through terrain). Some of the more useful unique power-ups disappear once another is picked up too, allowing an element of strategy that mixes things up a bit.
Another excellent point in its favour is the music. It's catchy, unique, dark, and worth listening to again and again.
Every four levels is a boss level, and sees Giana face off against a large arachnid. Enemies are predictably similar to what the Brothers encounter, just given different sprites.
Notably, the game gets hard fast. Even if you find some warps (the first few are easy finds), you may find the controls aren't keeping up with what you want the Sisters to do. Typical problems include not making the distance with jumps, lack of precise control, too many different jump heights required by some levels, ridiculously cramped spaces impossible to jump out of, timer too short, and overuse of disappearing platforms leading to too many racing scenes.
In the end either you'll like it or you won't. If you like a challenge (a.k.a. self-torture), then maybe this game is for you. I just like the title sequence.