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However, many vocational students struggle when vocabulary instruction relies on memorization and teacher explanation. This study investigated the effectiveness of Wordwall and Baamboozle in improving students’ vocabulary mastery and compared which platform produced stronger learning gains. It employed a quantitative quasiexperimental pre-test–post-test non-equivalent group design. The participants were 86 tenth-grade students from two intact classes at a vocational high school in Gresik, Indonesia: 43 students learned through Wordwall and 43 through Baamboozle across six sessions on jobs and professions vocabulary. Data were collected using vocabulary pre-tests and post-tests and analyzed through descriptive statistics, paired sample t-tests, an independent sample t-test, and effect size analysis. The results showed that both groups improved significantly, p \u003C .001. Wordwall scores increased from 61.25 to 76.48, while Baamboozle scores increased from 60.87 to 80.36. Baamboozle produced significantly greater gains, t(84) = -4.17, p \u003C .001, with very large effects. This study is limited by its singleschool sample, short treatment period, and one vocabulary topic. The findingsimply that EFL teachers should select game-based platforms based on interaction, retrieval practice, and instructional fit.\u003Cbr>This is an open-access article under the CC BY-SA license\u003Cbr>|\n\n1. INTRODUCTION  \nVocabulary mastery is a fundamental component of English language learning because it supports meaning-making, language production, and the development of other language skills (Syawaluddin et al., 2025; Rosydiyah, 2022). Students with stronger vocabulary knowledge are generally better able to comprehend texts, express ideas, and participate in classroom interaction (Mogesse et al., 2025) . Therefore, vocabulary is not only one element of language learning but also a core aspect of communicative competence (Saddhono et al., 2022; Maruf, 2023) . In the current educational context, effective vocabulary instruction is closely related to the digital transformation of learning. Educational technology should support meaningful and learner-centered instruction rather than simply add technological features to classroom practice (Pradana et al., 2022) . This issue is particularly important in Indonesia, where English proficiency continues to develop and where teachers need practical strategies for improving students’ vocabulary learning.  \nIn Indonesia, vocabulary instruction is especially relevant at the vocational high school level. English learning in vocational schools is expected to support students’ academic development and prepare them for workplace communication (Endarto, 2020; Zuhri et al., 2021) . Under the Merdeka  \nCurriculum, English learning outcomes emphasize students’ ability to communicate in various situations, understand main ideas and supporting details, engage with printed and digital texts, and express ideas appropriately using common vocabulary (Nalle et al., 2025) . These expectations indicate that vocabulary mastery is central to achieving curricular goals. In East Java, the large number of vocational schools and students further strengthens the relevance of this context (Ghi","cbCaitVHQR6eKBb3","https://ap.wps.com/l/cbCaitVHQR6eKBb3","pdf",497080,16,"English","# Introduction\n## Vocabulary mastery and communicative competence\n## Digital transformation and vocational context\n## Gamification and platform differences\n# Methodology and data analysis\n## Research design and participants\n## Instruments and statistical procedures\n# Results and implications\n## Learning gains and effect sizes\n## Limitations and recommendations","[{\"question\":\"What problem does the study address in EFL vocabulary instruction?\",\"answer\":\"Many vocational students struggle when vocabulary teaching depends on memorization and teacher explanation. The study targets the need for more effective, interactive vocabulary learning support.\"},{\"question\":\"How were Wordwall and Baamboozle compared in the research design?\",\"answer\":\"The study used a quantitative quasiexperimental pre-test–post-test non-equivalent group design. Two intact classes were taught with Wordwall or Baamboozle across six sessions on jobs and professions vocabulary.\"},{\"question\":\"Which platform produced stronger vocabulary gains and what were the findings?\",\"answer\":\"Both groups improved significantly, but Baamboozle produced significantly greater gains than Wordwall. The results reported very large effects for Baamboozle’s learning gains.\"}]","A Comparative Study of Two Game-Based Digital Platforms on Students’ Vocabulary Mastery in EFL Classrooms | PDF",1790837292]