Chip's Challenge ZX Spectrum

Chip desperately wants to join gorgeous Melinda's exclusive Bit Busters  Computer Club, and he's ecstatic when she offers him membership!  But there's a catch - before Chip can become a card-carrying Bit Buster,  he must complete Melinda's challenge... — Game Box

Chip's Challenge is a top-down tile-based puzzle video game  created in 1989 by Chuck Sommerville originally for the hand-held  Atari Lynx. Chip's Challenge was then later ported to multiple formats  including the Amiga, Commodore 64, ZX Spectrum, DOS, and Windows,  included in the Microsoft Entertainment Pack and Best of Microsoft  Entertainment Pack (the last of which was written by Tony Krueger in 1991) . Microsoft licensed Chip's Challenge from Epyx to write a DOS and  Windows version of the game; while porting the game, the logic was  slightly changed from the original version. It has also been converted  to the TI-84+ calculator and the TI-89 Titanium.

The original game was designed and coded by Chuck Sommerville, who also  made about a third of the levels.[3] Most of the conversions from the  Atari Lynx original to other formats were carried out by Images  Software in the UK.

The premise of the game is that high-school nerd Chip McCallahan has  met Melinda The Mental Marvel in the school science laboratory and must  navigate through Melinda's "Clubhouse" (a series of increasingly  difficult puzzles) in order to prove himself and gain membership to  the very exclusive Bit Buster Club.

Gameplay

Chip's Challenge consists of a series of 148 two-dimensional levels  (149 in Microsoft's version) which feature the player character,  Nerdy Chip McCallahan, often called just Chip, and various game  elements such as computer chips, buttons, locked doors, water and  lethal monsters. Gameplay involves using arrow keys, directional pad  or mouse to move Chip about each of the levels in turn, collecting  enough chips to open the chip socket at the end of each level, get to  the exit, and move on to the next level.

While the same set of rules applies to each level, there are many  different kinds of levels. Some are action-oriented and some are  puzzle-oriented. Most levels have a time limit. Types of levels  include solving a block-pushing puzzle to clear a path, dodging  enemies, and moving through a maze. Levels can be skipped by entering  an appropriate four-letter non-case-sensitive password. For the PC  versions, game progress is automatically saved. If one is having a  lot of trouble with a level, the game allows the player to skip to  the next level. Progress is measured in terms of completed levels  and player score, which is a sum of the scores obtained on each level.  Level scores for timed levels can be improved by quickly completing  the level, and scores on all levels can be improved by using fewer  attempts to complete the level.

Source:Wikipedia