# Packet 0x0C/0xC1
A client sends Packet 0x0C (PSOv1) or 0xC1 (PSOv2 or later) to the server to create a game on a block.
## Dreamcast Packet Format
| Bytes | Meaning |
| --- | --- |
| 0x00 | Packet Type (0x0C or 0xC1) |
| 0x01 | Flags (0x00) |
| 0x02-0x03 | Packet Size (0x30) |
| 0x04-0x0B | Padding (all zeroes) |
| 0x0C-0x1B | Game Name |
| 0x1C-0x2B | Game Password |
| 0x2C | Difficulty |
| 0x2D | Battle Mode (v2 only, padding in v1) |
| 0x2E | Challenge Mode (v2 only, padding in v1) |
| 0x2F | V2 Flag (1 = v2 only game, 0 = v1/v2 game, padding in v1) |
