The POW Block is an item that came to the series in Super Smash Bros. for Nintendo 3DS and Wii U, which is currently the only game in the series to have this item. Whenever it hits the ground, it causes an earthquake to harm opponents if they're on the ground. They can be used up to three times before disappearing. It can be avoided by shielding the shockwave correctly or being airborne.
This special block first appeared way back in Mario Bros. Hitting it will send enemies flying into the air. You can avoid the shock waves by shielding at the right time or jumping into the air. After being triggered three times, a POW Block will vanish into thin air--don't waste it!
- Arcade - Mario Bros. (1983)
- Wii - New Super Mario Bros. Wii (12/2009)