Tapeworm
Guide by Chris Read
Tapeworm is the very first Nibbles game. Whoever made Nibbles for calculators and QBasic ripped Tapeworm off. Aside from eating squares, there's also enemies to avoid. Plus, there's a time limit for each square to eat. If you don't make it, two more squares will appear, and you'll have to eat those, too. So there.
Level 1
The basic first level. Eat 10 squares and the fruit in the border.
Level 2
Don't touch the bar in the middle.
Level 3
The black-out level. You'll see a square for a few seconds, and then the screen will go black and you'll only see your snake's head and the occasional enemy. You'll have to memorize where the square is, or if playing with an emulator, put your finger on it so you can guide the snake to where it is. But, the catch is, you can't see the body of the snake, which if you run into, you lose a life.
Level 4
Like Level 2, but has extra killer borders at the end of the first one.
Level 5
A whole bunch of killer borders.
After that...
The levels just repeat themselves over and over again, the point being how long you can survive without using all your lives.