effect one very large level without passwords, meaning that it must be completed in one attempt. Finally, some screens also contain an exposed 'roof', where meteors (predictably fatal to Repton) fall from the sky. Repton's requirements in Repton 2 are challenging: Repton must not only collect all diamonds (including those held in safes and behind cages), but also collect all earth, kill all the monsters, collect all puzzle pieces and use all transporters. Once these substantial tasks have been accomplished, Repton must then negotiate the 'roof' of the entire width of the final screen, avoiding meteors falling from the sky in order to reach the starport and thus complete the game. This part is particularly tricky, since the meteors fall in a random fashion, making it difficult for the gamer to guide Repton to safety. This long list of requirements, coupled with the fact that the game must be completed in one attempt, is unique among the Repton series and makes Repton 2 by far the hardest Repton game to successfully complete. Unfortunately a bug in the original version of Repton 2 meant that the game contained one diamond fewer than the stipulated number needed to finish the game, so completion of this first version is impossible. When Repton 2 was re-written for the PC, it introduced a 'save game' feature making it considerably easier to complete. In addition, brand new scenarios were included, effectively new games. Repton 3 Repton 3, released 5 November 1986, was developed by Matthew Atkinson at Superior's invitation since Tim Tyler was not interested in programming it—although he did design some of the levels for the new game. While the first two games had only taken a month each to program, Repton 3 took eight months. It reverts to the form of a series of time-limited, password-protected levels. A few new features were introduced: fungus (a substance that gradually spreads wherever it finds space and kills Repton on contact), time capsules (resetting the current level's time limit each time one is collected), crowns and a timebomb which must be defused to complete each level. The inclusion of the timebomb means that, as well as collecting all of the diamonds and crowns, the user has to plan their route so as to finish up at the timebomb at the end of the level. Repton 3 includes a map editor along with the game, so that data