Spellbee! is a spelling game where, after you register, you choose a player to compete with in a spelling contest. Each player chooses from a variety of words and challenges their opponent online to correctly spell the word that is spoken to them in the context of a sentence.
It’s a pretty neat concept and, though the text-to-speech software it uses is definitely not top-tier, it’s still a game students would enjoy playing and would be accessible to Intermediate English Language Learners.
It’s quite easy for players to register very quickly. There’s also a slightly more complicated registration process that students and teachers can use in order for teachers to monitor student progress.
I’m adding Spellbee! to both The Best Sites Where Students Can Work Independently & Let Teachers Check On Progress and to The Best Online Games Students Can Play In Private Virtual “Rooms”.