The Scrubblies and their friends have put all the special keys in hard-to-get places. Help Trogg collect all the keys, but watch out for the balloons and daggers!

If you run out of time it becomes night-time. You can continue to play in the darkness, but you can't yo-yo balloons or daggers.

There are a few things that Trogg can do that aren't obvious at first sight. If you hold the yo-yo key down, Trogg yo-yos further. If that still doesn't reach where you're trying to yo-yo, move a step or two closer (if you can) and try again. You will need to do this halfway across the first sheet and again later.

Trogg can walk past one rope and catch the next one along or walk off a platform and grab hold of the rope beside it. This is useful at the start of the fourth sheet (hold the "Down" key down and walk right off the log-end). If you're having jumping across gaps, go to the top of the first bit on sheet one and practise up there. You'll have Trogg leaping around in no time at all!

If you're wondering what everything does: bulbs give you more time before it goes dark, gems boost your score, and all the keys must be collected to finish each screen. Remember that Trogg has a big nose that helps get keys - although it often gets in the way! You start with three lives.

The game may be played from the keyboard or using a joystick (only First-Byte joysticks on the Electron). To start the game, press RETURN if using keyboard control or Fire if using a joystick. To use a First-Byte joystick, wait until the game has loaded, then press F until it bleeps.

Z - Left, X - Right, * - Up/Jump, ? - Down, RETURN - Yo-yo
S/Q - Sound/Quiet, N/M - Tune On/Off, COPY/DELETE - Pause On/Off ESCAPE - Quit Game

The three figures shown at the top of the screen are:

• The time remaining until darkness.
• The number of lives remaining.
• Your score.

If you press ESCAPE and RETURN you can redesign the current screen.

The shapes are thought of in terms of queues. There's a queue for all the platforms, ladders, gems, keys and bulbs, etc. However, each queue has a maximum size, but this is quite large and you normally fill up any of the big queues. If you cycle between queues until you get the platforms' queue, you'll notice that there are different size platforms. This means that to put down lots of little platforms is a waste of time and space. Similarly with ladders.

Z - Moves shapes left, X - Moves shapes right, * - Moves shapes up
? - Moves shapes down, RETURN - Places/deletes a shape
Q/W - Cycles between queues of shapes, SPACE/A - Cycles within a queue of shapes
I - 'Remember' the current screen
CTRL-L - Loads a set of screens, CTRL-S - Saves a set of screens
CTRL-C - Clear screen, ESCAPE - Returns to game

You should 'remember' the current screen you're editing by pressing I, before pressing CTRL & S.

You won't be allowed to 'remember' a screen if there isn't at least one key and Trogg on the screen.

Trogg can only be put on or off the screen when you can see the left-hand edge of the playing screen.

Don't put too many platforms too close to the top; it becomes too difficult to play.

Don't worry about designing a screen to the full length of the playfield.

If, when you try to remember the screen, you get a 'No Room' error, either scrap the screen or trim it down to fill the space (trimming is usually a good exercise anyway).

Do not attempt to save onto the Frak cassette. Only save only a separate cassette.

On the Acorn Electron version only, there are some extra features.

On level 5 and above, pressing SPACE saves your current position provided Trogg is on a platform. If you lose a life, you start again from this position.

When on the high-score table screen, pressing CTRL with keys 1-9 selects levels 1-9; pressing CTRL with keys W, E, R, T, Y, U, I or O selects screens 1-9.

When on the high-score table screen, pressing keys 1, 2, 3 or 4 selects either heavy, medium, light or no cross-hatch; pressing keys 5, 6 or 7 selects the screen colours.