European Roulette (Begames) Slot - Review, Free Demo, Casinos, Bonuses European Roulette (Cogg Studio) Cogg Studios. . Return to player. Stay updated on the. This version is developed by Cogg Studio. The game's theoretical return to player (RTP) is %. European Roulette (Cogg Studio) by Cogg Studios. %. The range of bets is quite diverse, you can. The range of bets is quite diverse, you can. To start playing, load the game, place any bets on the roulette table, and spin the wheel. The game's theoretical return to player (RTP) is %. Game Type. This version is developed by Cogg Studio. Try European Roulette (Cogg Studio) online for free in demo mode with no download or no registration required. European Roulette (BGaming) is a roulette game by BGaming. American Roulette (Urgent Slots & Games ️ Claim Your Bonus and Win REAL. May 26, · Table Games.