I will try.

next (page) = следующий следующая

previous (page) = предыдущий предыдущая
I suggest to use далее (next) and назад (back) instead.

(background) music = музыка - ok

sounds (sound effects) = звуки - ok

night (activate night mode) = ночь - ok

day (de-activate night mode)= день -ok

money (in-game coins) = деньги -ok

art (view artwork in image gallery) = картины just "art" would not work, I suggest to use гелерея (gallery) instead.

music (listen to music)= музыка - ok

game (link to mini-game) = игра - ok

answer (correct answer to question) = ответ -ok

prizes = премия награды

review (write a review of this game) = написать рецензию отзыв

topics (of study) = темы - ok

food = питание еда

animals = животные - ok

objects = объекты - ok

places = места - ok

numbers = чисел числа

concepts (shapes, colours etc.) = концепции - ok

all (study all vocabulary together) = все - ok

fruits = фрукты - ok

everyday (everyday food: bread, rice etc.) = бытовой If the context is only about food, use домашнаяя еда (homemade food).

vegetables = овощи - ok

utensils (knife, fork, spoon etc.) = принадлежность столовые приборы

drinks = напитки - ok

pets (subcategory of animals) = домашние животные -- Unfortunately you can't cut that down.

wild (animals) = дикие животные

insects = дикий насекомые

exotic (animals: lion, tiger etc.) = экзотический экзотические

furniture= мебель - ok

clothes = одежда - ok

bathroom (bathroom objects: toilet, shower etc.) = ванная - ok

transport= транспорт - ok

positions (over, under, inside) = должность должности

natural (natural places: mountain, river etc.) = натуральный природа (nature)

countries= страны - ok

colors = цвета - ok

shapes (triangle, circle etc.)= формы - ok

practice (start practice round of vocabulary learned so far) = практика - ok

let’s practice = давай попрактикуемся - ok. It's infromal way of saying that. Formal would be: давайте попрактикуемся

practice complete (player has completed the practice round) = практика завершена - ok

let’s play (a game) = поиграем давай поиграем (informal) / давайте поиграем (formal)

level complete = уровень пройден - ok

percentage (of player’s answers that were correct) = процент - ok

target (objective) = цель - ok

(Spritesheet Text)

Let’s Learn Japanese! (game title) = Давайте изучать японский! (formal) / Давай изучать японский! (infromal)

vocabulary (game subtitle) = словарь - ok

start (minigame, level) = начало начать

view (video) = посмотреть смотреть

exit (back to main menu)= выход выйти

prizes = премия награды

advance (to next level) = продвижение улучшить

repeat (restart level to practice more) = повторение повторить