# Rex Run — Clase Learning
> A dinosaur platformer preview: run, jump and collect letters with Rex.
- URL: https://claselearning.com/play/rexrun
- Visit (tracked): https://promoteindex.com/go/rex-run-clase-learning
- Category: game
- Built with: unspecified
- Pricing: free
- Game availability: demo (maker-reported)
- Game AI use: unspecified
- Game platforms: browser
- Play: https://promoteindex.com/go/rex-run-clase-learning?placement=games&target=play
- Votes: 1
- Tested by PromoteIndex: no. Not tested by PromoteIndex yet. Use at your own risk.
- Listed: 2026-10-19
- Tags: dinosaurs, educational, platformer, letters, kids, browser-game
Rex Run is a free browser dinosaur platformer preview from Clase Learning’s Dino Playroom. Run, jump and collect letters with Rex, explore The Floor Is Lava sequences and use a roar to handle obstacles. Easy mode lets young players hold the screen while Rex moves automatically; Big Kid mode offers directional controls plus action buttons. Built with touch controls for tablets and phones, with desktop browser play too. This game is a code-gated preview: a grown-up must enter an unlock code before playing. It is still in development.
Listing: https://promoteindex.com/p/rex-run-clase-learning

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