"Speed" is a genre, not a single game. The rules depend entirely on which variant you mean.
| Game | AKA | Players | Core Mechanic | Goal |
|---|---|---|---|---|
| Speed (2-Player Shedding) | Spit, Slam | 2 | Simultaneous play. Match rank ±1 on center piles. Replenish from hand. Reflex + memory. | Empty hand first. |
| California Speed | — | 2 | Deal ½ deck each. Simultaneous: play matching rank on 4 center piles. Refill from stack. Pure speed. | Empty hand + stack. |
| Crazy Eights (often called "Speed" regionally) | 8s, Switch, Uno (commercial) | 2-6 | Turn-based. Match rank/suit. 8 = wild (change suit). Draw if can't play. | Empty hand first. |
Describe: Players? Turn-based or simultaneous? Standard deck or special? Goal?