The learning modules contain:
Japanese Sounds
Japanese Characters
Romaji (English written translation of sound)
Definitions

The modules also have the option to randomize the order, hide Romaji and mute sounds for additional challenges.

Additionally, the modules have a quiz mode where you can continue to practice and monitor your progress.

Streets of Tokyo Mini-Quiz 3D Game
*mini game may not run on older devices

The current version of this app contains the following learning modules:
Hiragana
Katakana
Sino-Japanese Numbers
Seasons
Weekdays
Months
Colors
Animals
Clothes
Family
Food
Adjectives
Conversation
Native Japanese Numbers
Kanji

This app assumes no prior knowledge of the Japanese language or Kana (Hiragana, Katakana, Kanji)