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The game runs in a DOS emulator: keyboard and mouse work like on an old PC, each game has its own layout (see the hints in the game). There are no on-screen buttons on a phone.

First click the game screen once: after that the keys go to the game, not the page. To scroll the page again, click outside the game window. If the game does not respond, click the game screen again.

The game runs from the Internet Archive site in their emulator; there are no game files on our servers. We show it so you can get to know it; the rights to the game belong to the rights holders. The built-in player has no volume control: if there is no sound or you need to adjust it, open the game page on Internet Archive, which has sound and full-screen buttons. Game page on Internet Archive.

Arithmetic Games Set 2

MS-DOS · 1981 · International Business Machines

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Specs

Developer: Science Research Associates
Publisher: International Business Machines
First release: 1981
Platform: MS-DOS
Rarity: no data
Why
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Description

Like the first set, this installment features two games that flex the player's mathematical skills. This time both are based on puzzles, which must be solved within the chosen number of turns (at adjustable difficulty levels). Discovery Machine: one or two players face off against the titular apparatus, which takes a number, applies a hidden formula and prints the result.

The contraption displays a sample input/output pair, and your task is to find out the formula. For each input shown, you'll have to guess the result; if you get it right three times in a row, you win. Number Chase: a Mastermind-style code-breaking game - the player has to guess a series of digits, and gets an evaluation after each turn. Two human opponents may play each other; in the single-player version, the computer can (optionally) join in as an AI opponent, and take a stab at guessing the human player's number on its own.

Source: Wikipedia, CC BY-SA 4.0

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