As you can see from the screenshot below, there are three options we can choose from to play. The practice mode gives us examples of the different tenses, voice, continuous and perfect mode by just clicking the coloured buttons at the top. It's a kind of theoretical background through examples.
In the tense game, the machines gives you a tense or verb form and an example sentence. You have to press the right coloured buttons at the top to match the verb form.
In the sentence game, you have to press the buttons to make the right verb form, but the machine only shows you a sentence.
