Run right, jump over gaps and spikes, and stomp enemies by landing on them. Bump ? blocks from below for coins. Both players have to reach the flag before the next level starts.
← → or A D to run · Space, ↑ or W to jump (hold to jump higher) · P pause (bot games)
Red spiky shells can't be stomped. Fall in a hole or get hit and you pop back at the last checkpoint.
Bosses glow when you can stomp them.
Bot: play with Pop, a computer friend who follows you. Online: press Host, send the code to a friend, and they press Join on their device.