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VoiceWalker - a voice controlled game

Android App: VoiceWalker, a Game with voice control
Navigate through the maze using voice commands. Solve tasks in different levels:
VoiceWalker

Goal of the game

Navigate your character through the maze to reach the banner. Press the "speak" button and find the secret commands to instruct the charater how to behave. Currently there are 9 levels available, for each level different commands have to be used. Play each level one or two times to collect sufficient scores to enable the next level. You also can pay for hints (loose scores) by pressing the yellow bulb. You will loose half of your scores, if you abort a game and start a new one.
VoiceWalker a voice controlled game
VoiceWalker a voice controlled game

Speech recognition and synthesis

You can change between two languges German and English. For language training it is recommanded to select a foreign language. The language change only changes the speech recognition and voice output language, i.e. give German commands, if you have choosen German. You can disable the acoustic prompt "What shall I do?" in the menu. Note, recognition is very robust, the character moves also, if a similar word has been recognized. Maybe you have not found the correct secret commands, even if the character moves.

Solutions

Don't read this, if you like to play the game and if you like to find out the secret words by yourself.
Level 1
Possible English commands: left, go left, west, right, go right, east, up, go upwards, north, down, go downwards, south, repeat, same again, help, tear down the wall, remove the wall, new walls
Mögliche deutsche Kommandos: links, gehe links, West, rechts, gehe rechts, Ost, rauf, gehe hinauf, nach oben, Nord, runter, gehe runter, nach unten, Süd, wiederholen, nochmal, Hilfe, Mauer entfernen, Mauer einreissen, neue Mauer
Level 2 (Color)
Possible English commands: towards green, green, towards red, red, towards yellow, yellow, towards blue, blue, repeat, same again, help, tear down the wall, remove the wall, new walls
Mögliche deutsche Kommandos: Richtung grün, grün, Richtung rot, rot, Richtung gelb, gelb, Richtung blau, blau, wiederholen, nochmal, Hilfe, Mauer entfernen, Mauer einreissen, neue Mauer
Level 3 (Joker)
Possible English commands: left, go left, west, right, go right, east, up, go upwards, north, down, go downwards, south, repeat, same again, help, move the joker, change the joker, new joker
Mögliche deutsche Kommandos: links, gehe links, West, rechts, gehe rechts, Ost, rauf, gehe hinauf, nach oben, Nord, runter, gehe runter, nach unten, Süd, wiederholen, nochmal, Hilfe, Joker bewegen, Joker verändern, neuer Joker
Level 4 (hidden banner)
Possible English commands: towards green, green, towards red, red, up, go upwards, north, down, go downwards, south, repeat, same again, help
Mögliche deutsche Kommandos: Richtung grün, grün, Richtung rot, rot, rauf, gehe hinauf, nach oben, Nord, runter, gehe runter, nach unten, Süd, wiederholen, nochmal, Hilfe
Level 5 (digonal)
Possible English commands: towards green, green, towards yellow, yellow, towards red, red, towards blue, blue, repeat, same again, help, move the joker, change the joker, new joker, go left, left, change column
Mögliche deutsche Kommandos: Richtung grün, grün, Richtung gelb, gelb, Richtung rot, rot, Richtung blau, blau, wiederholen, nochmal, Hilfe, joker bewegen, joker verändern, neuer joker, nach links, links, Spalte wechseln
Level 6 (jump)
Possible English commands: towards green, green, away from green, towards red, red, away from red, repeat, same again, help, jump
Mögliche deutsche Kommandos: Richtung grün, grün, von grün weggehen, weg von grün, Richtung rot, rot, von rot weggehen, weg von rot, wiederholen, nochmal, Hilfe, springen
Level 7 (circular)
Possible English commands: horizontally, right, go right, east, vertically, upright, down, go downwards, south, repeat, same again, help, remove wall, jump
Mögliche deutsche Kommandos: horizontal, rechts, gehe rechts, Ost, vertikal, runter, gehe runter, nach unten, Süd, wiederholen, nochmal, Hilfe, Mauer entfernen, springen
Level 8 (moon/sun)
Possible English commands: "towards Moon, go to Moon, towards sun, go to sun, repeat, same again, help
Mögliche deutsche Kommandos: Richtung Mond, zum Mond, Richtung Sonne, zur Sonne, wiederholen, nochmal, Hilfe