Here’s a useful write-up on — including what it is, why it gets blocked, and how to play it safely when restricted. How to Play Slope Game When It’s Blocked (Useful Guide) Slope is a fast-paced 3D running game where you control a rolling ball down a neon track, avoiding red blocks and falling off the edge. It’s popular in schools and workplaces — which is exactly why it often gets blocked by network filters.