Some stone blocks (and ice blocks, in Area 3) can be pushed from either side (but not pulled). 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. (Though, a block that isn't supported from underneath will never be a pushblock.) They can appear randomly inside walled areas, but appear often in certain area templates in Areas 1 and 4 - if you find a pushblock somewhere and later find another place that looks very similar, there might be a pushblock again. They don't show up in particularly useful locations, nor 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. They are in a bit more convenient locations in Area 4 where they can often be used to crush enemies or make jumping over lava pools easier.
- Pushable blocks can crush enemies. Bats will instantly die if a block is shoved into them from the side, 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. If you kill a shopkeeper in this fashion, it won't register as your fault; other shopkeepers will remain neutral toward you. However, this has become very difficult as of version 0.99.8, since a shopkeeper trapped by a pushable block will begin firing his shotgun, and can hit through the block at point-blank range (which is where you'll be if you're trying to push it). Pushable blocks sometimes don't crush Mummies.
- 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. This will kill you.
- The Giant Yeti's roar transforms chunks of the icy landscape into pushable blocks. If one lands on you, it will kill you.
- Like virtually everything else in the game, an inconveniently-placed pushable block (one that's covered up the exit, for example) can be bombed.
- If a block is pushed on a stack of 3 gold bars, these will rise to be above the block. However, large gems and single gold bars stay inside the block.