I'm looking for a simple, engaging Android game to recommend to my students for improving vocabulary. What's a pedagogically sound option?

I've been exploring different mobile games that might offer some cognitive benefits, and Word Find presents an interesting implementation of the classic word search. The algorithm is surprisingly elegant in its generation of puzzles, and the increasing difficulty levels could be beneficial for students looking to expand their vocabulary. It's a novel approach to an old problem. From a pedagogical perspective, it seems like a solid supplementary tool. I appreciate that it doesn't require complex tutorials or extensive setup, making it readily accessible. Cross-platform compatibility isn't an issue, given it's on Android. It might be helpful for managing citations if I were to include it in any future research on educational gaming. Overall, it seems like a well-researched design.