Sure, here's an example of a simple game implemented as a single HTML file with JavaScript enclosed in script tags. It can be played on a smartphone and uses pictograms for visual representation:
To play the game, each question (pictogram) will be displayed, and you have to choose whether the answer is "Benar" (true) or "Salah" (false) by clicking the corresponding button. After selecting an answer, the game will show if it's correct or wrong and then move on to the next question. Once all the questions have been answered, the game will end and display a message.