Heureka-Klett is a German software engineering company which has made several personal computer games

Personal Computer Games

Personal Computer Games was a multi-format UK computer games mag of the early/mid eighties.-History:It is famous for launching the careers of several notable games journalists of the '80s including Bob Wade, Peter Connor and Chris Anderson. Anderson would later launch Amstrad Action, and Future...

 of the sort called "edutainment

Edutainment

Edutainment is a form of entertainment designed to educate as well as to amuse.-Overview:...

". They are is point-and-click

Point-and-click

Point-and-click is the action of a computer user moving a cursor to a certain location on a screen and then pressing a mouse button, usually the left button , or other pointing device...

 puzzle-adventure game

Adventure game

An adventure game is a video game in which the player assumes the role of protagonist in an interactive story driven by exploration and puzzle-solving instead of physical challenge. The genre's focus on story allows it to draw heavily from other narrative-based media such as literature and film,...

s for either the PC or the Mac. These were distributed by Tivola International to be localized for many markets.

• Physikus, localized to Physicus for the English-speaking market, attempts to teach physics by exploring an island whose locks are opened by working machines that illustrate different principles of physics.

• Chemikus, localized to Chemicus for the English-speaking market, attempts to teach chemistry by exploring a land whose rooms are linked by an underground railway whose controls are in the form of the periodic table
  Periodic table
  The periodic table of the chemical elements is a tabular display of the 118 known chemical elements organized by selected properties of their atomic structures. Elements are presented by increasing atomic number, the number of protons in an atom's atomic nucleus...
  
   of the elements
  Chemical element
  A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. Familiar examples of elements include carbon, oxygen, aluminum, iron, copper, gold, mercury, and lead.As of November 2011, 118 elements...
  
  . The player must set up and perform chemical reactions from substances and objects in his inventory. The plot is in the form of a trying to rescue a friend who has been captured by unseen enemies.

• Bioskopia, localized to Bioscopia for the English-speaking market, attempts to teach biology in a similar manner by having the player try to save a woman explorer who has been attacked by disease-carrying robots once used for experiments before the abandoned facility of Bioscopia was shut down. The player must make and supply penicillin to cure her while unlocking hidden areas and exploring the facility.

Before turning to edutainment only, Heureka-Klett published also a school version of The Interactive Geometry Software Cinderella

Cinderella (software)

Cinderella is a proprietary interactive geometry software, written in Java programming language.- History :Cinderella was initially developed by Jürgen Richter-Gebert and Henry Crapo and was used to input incidence theorems and conjectures for automatic theorem proving using the binomial proving...

.