The crate itself functions no differently from a regular checkpoint crate. When the player comes into forceful contact with one, (via spinning, jumping, etc.) the word checkpoint will appear above the crate, providing an area to start back from when the player dies instead of having to return to the beginning of the level. The difference is though, like all iron crates, the crate cannot be busted by any means, and is not required to be when obtaining a clear gem.
When this crate is used, it reverts to a standard iron crate, whereas a used checkpoint crate will remain unfolded on the ground where it was struck. This allows the iron checkpoint crate to still be used as a platform, something the standard checkpoint crate lacks.
- In Eruption Disruption, there is an iron checkpoint crate in a section that leads to that level's gem shard, but that section is required for box completion because it contains a copter crate, defeating the purpose of the checkpoint being iron. It appears that this was an oversight by the developers and that they had intended for that section to not be required for box completion.
- This is the only type of crate from Crash Bandicoot 3: Warped that didn't appear in Crash Bandicoot: The Wrath of Cortex and Crash Bandicoot: The Huge Adventure. This crate would serve no purpose in The Wrath of Cortex as activatable iron crates, such as the ! Crate and Nitro Switch Crate, count towards a level's crate tally.
|! | ? | Activation | Aku Aku | Ammo | Arrow | Basic | Big TNT | Block | Bounce | Checkpoint | Copter | Cortex | Crash | Detonator | Freeze | Ghost | Infinity | Invisibility | Iron Arrow | Iron Checkpoint | Iron | Locked | Magic Carpet | Nina | Nitro | Nitro Switch | Pants | Slot | Spike | Time | TNT | World | X|