Whether you’re playing to relax or studying the source code to build your own arena game, Paper.io on GitLab proves one thing: even the simplest ideas – a square, a line, a little space to claim – can become endlessly compelling when the rules are tight and the risk is real.

GitLab repositories host versions of both the original retro classic and its modernized sequel: GitLab.com

Avatars are highly vulnerable when expanding. If a rival cuts through your trailing line before you reconnect to your base, you are immediately eliminated.