Thank you for testing. I just pushed another update to the game, adding keyboard control with the arrow keys + Respawn can now be triggered with the Enter key. You may need to hard refresh the site for it to update (Ctrl + F5)
Before you give it another go though, here are some follow-up questions for you:
- Which OS are you running? Win, Mac or Linux?
- Are you using any browser extensions at all? Particularly ad-blockers or other extensions that modify code could be problematic.
- Is it a company computer? In that case there could be company security policies in place the mess with stuff.
- does the original game slither.io work as intended?