Some stone blocks (and ice blocks, in Area 3) can be pushed from either side. They are visually indistinguishable from blocks which can't be pushed; the only way to tell the difference is to give it a shove and find out. They don't show up reliably enough to become an integral part of any strategies, but there are a few useful things to keep in mind when dealing with these blocks.
Functionality
- Pushable blocks can crush enemies. Bats will instantly die if a block is shoved into them, but many monsters will simply be displaced on top of the block and drop down onto your head. If possible, either push a block onto an enemy from above or corner the enemy in an alcove so there's no way to escape.
- A block dropped into lava will remain useful as a platform while it slowly sinks.
- If two pushable blocks are stacked on top of each other, shoving the bottom one will result in the top one crashing down onto your head.
- The Giant Yeti's roar transforms chunks of the icy landscape into pushable blocks.
- Like virtually everything else in the game, an inconveniently-placed pushable block (one that's covered up the exit, for example) can be bombed.