Sonic the Hedgehog

Sonic the Hedgehog is a popular video game series with many installments; the first, Sonic the Hedgehog, was published in 1991 for the Sega Mega Drive.

Slots can be found in multiple Sonic the Hedgehog games; there is no cost incurred for playing a game, but prizes may include penalties such as loss of rings.

Sonic the Hedgehog 2
Slots can be found in Casino Night Zone. Wins are calculated using the combination of three symbols, ignoring order.

Sonic 3 & Knuckles
Slots can be found in the Slots bonus stage. Wins are calculated using the combination of three symbols, ignoring order.

Sonic Adventure
Slots can be found in Casinopolis. Wins are calculated left-to-right, on five win lines (three horizontal and two diagonal). In addition to awarding rings, for a period of time all rings earned from the pinball machine are doubled. Reels can be stopped with timing, so this is skill-based and not luck-based.

Sonic Heroes
Slots can be found in Casino Park and BINGO Highway. There are two types: single-reel slots and three-reel slots. Reels can be stopped with timing, so this is skill-based and not luck-based.

Single-reel slots
Wins are determined by the lone symbol that appears.

Three-reel slots
Wins are calculated left-to-right.