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Reaction Tester


"In Reaction Timer, you must stop the clock; the program then displays your time along with a rating from excellent to poor. That's it for this 'game'."
The Micro User


The nuclei of all elements with less than 17 electrons have become unstable.

In an effort to save the universe, you are your ship have been reduced to sub-atomic size.

Five 'gluons' have been provided for each element. Collect each one from the bottom of the screen and take it to the nucleus. To leave a gluon in the nucleus, stop between the dotted lines.

Be careful not to touch anything and hurry, there isn't much time left!


Try to stop the wall advancing up by knocking the bricks out with a cannon ball.

The cannon ball moves back and forth along the top of the screen until SPACE is pressed. It then drops down and crashes into the wall. There are three speeds: 1 is the slowest and each brick is worth 10 pts, one bonus point is given on level 2 and 2 bonus points are given on level 3.

Reaction Tester

The white bar which will appear on the left of the screen will change colour following the sequence of traffic lights (RED, YELLOW, GREEN).

Press SPACE as soon as the colour changes to green. Your reaction time and rating will then be given.

Cover Art Language(s): English
Compatibility: BBC Model B, BBC Model B+, BBC Master 128, Acorn Electron
Release: Professionally released On Cassette
Original Release Date: 1st Dec 1988
Links: Everygamegoing,

Cover Art

Front Inlay Images

Back Inlay Images

Media Scan Images



Triple Decker 7 (Cassette)
Triple Decker 7 (5.25" Disc)