The need to develop online classes in the COVID-19 pandemic era was undeniable. This study aimed to investigate students' learning achievement and their feedback in digital vocabulary class, which utilized Kahoot! and Socrative as drilling practice tools. It was quasi-experimental research on first-year students of the Railway Mechanical Technology program in Indonesian Railway Polytechnic (N=48). The primary data was gathered from vocabulary pretest and posttest. Then, the test results were analyzed using paired t-test, Pearson r correlation, and Cohen d coefficient. The supporting data were collected by giving a questionnaire to know students' feedbacks. The results revealed that the digital class effectively improved students' learning vocabulary achievement in English for railway mechanical technology. The questionnaire results showed positive feedback from the students in learning through digital platforms.