Colosseum data has 256 blocks of 4 bytes for each item bet.
| Description | Value |
| Base offset (SNES) | $DFB600 |
| Block size | $04 |
| Number of blocks | $0100 |
| Total size | $0400 |
| Byte | Description |
| $00 | Monster fought |
| $01 | 0x40 | Always? |
| $02 | Item reward |
| $03 | 0x00 | Show reward |
| 0xFF | Hide reward |