Complex sentence: Sega later released a six-button version in 1993; this pad is slightly smaller and features three additional face buttons, similar to the design of buttons on some popular arcade fighting games such as "Street Fighter II".
Split into simpler sentences: Sega later released a six-button version in 1993. This pad is slightly smaller and features three additional face buttons, similar to the design of buttons on some popular arcade fighting games such as "Street Fighter II".