Game Boy · Action
Rex Run
No ROM
Upload one manually. The file stays in this tab and is not sent to a server.
EmulatorJS (open source, GitHub) · Touch pad on phones. A Bluetooth gamepad is better for fighters and karts.
Controls
On a phone, use the on-screen pad. A Bluetooth gamepad works too.
Rex Run is el_seyf's Game Boy homebrew from 2019. Clear the hazards and finish the stage. This ROM is hosted under GPL-3.0.
Walkthrough
Rex Run is a redistributable open-source Game Boy homebrew. The ROM loads when you open the page. Clear the hazards and finish the stage.
Play

The ROM loads from this site. D-pad, A, and B.
Goal

Clear the hazards and finish the stage.
License

GPL-3.0. Source: https://github.com/elseyf/rex-run-gb. Commercial ROMs are not hosted.
FAQ
Is Rex Run free to play here?
Yes. The author released it under GPL-3.0, and this page hosts that ROM.
Who made it?
el_seyf, 2019. Source: https://github.com/elseyf/rex-run-gb
Are there cheat codes?
No published cheat pack. Save-states are in the emulator menu.
Can I play it on a phone?
Yes. The on-screen pad maps to the D-pad, A, and B. Landscape is easier.
Do you host commercial ROMs?
No. This page is an open-source homebrew. Classic commercial games stay on the file picker.
Emulator cores live on S3. A game starts from a hosted ROM when that file exists, or from a local file you pick. Local files are not uploaded.