Possible Clues:

• "I Wish" rapper __-Lo
• __-Ball (carnival game)
• --- -Ball (arcade game)
• Part of a game name reportedly chosen because the game surface resembles a slope
• -- -Ball (arcade rolling game)
• ___-Ball (amusement park game)
• ___-Ball (game on an incline)
• With "ball," a carnival game
• ___-Lo ('I Wish' rapper)
• Rapper ___-Lo