Here's a list of indoor sports from around the world:
Basketball: A team sport where two teams compete to score points by shooting a ball through the opponent's hoop.
Volleyball: Teams try to hit a ball over a net and into the opponent's side of the court without the ball touching the ground on their side.
Badminton: A racquet sport played with shuttlecocks, where players hit the shuttlecock back and forth over a net.
Table Tennis: Also known as ping pong, players use small paddles to hit a lightweight ball back and forth across a table divided by a net.
Squash: A racket sport played in a four-walled court where players take turns hitting a small rubber ball against the front wall.
Tennis: Players use rackets to hit a ball over a net into the opponent's court, trying to score points by making it difficult for the opponent to return the ball.
Futsal: A variant of soccer played indoors on a smaller field with a smaller ball, emphasizing skill, quick passes, and close control.
Hockey (Indoor): Similar to field hockey but played indoors on a smaller court.
Boxing: A combat sport where two opponents throw punches at each other, aiming to score points by landing punches on the opponent's body or head.
Martial Arts (Various): Various forms of martial arts are practiced indoors, including karate, judo, taekwondo, and Brazilian jiu-jitsu.
Gymnastics: A sport involving exercises and routines that require strength, flexibility, balance, and coordination.
Darts: Players throw small, pointed missiles (darts) at a circular target (dartboard) fixed to a wall.
Snooker: A cue sport played on a large table covered with a green cloth, where players use a cue to strike the cue ball and pot the colored balls into pockets.
Bowling: Players roll a heavy ball down a lane to knock down pins arranged in a triangular formation at the other end.
Curling: Teams slide stones on a sheet of ice towards a target area, while teammates use brooms to influence the path of the stone.
Handball: Teams pass a ball using their hands with the aim of throwing it into the opponent's goal.
Racquetball: A sport played with a small rubber ball and racquets, where players hit the ball against the front wall.
Synchronized Swimming: A water sport involving a choreographed combination of swimming, dance, and gymnastics performed in synchronization with music.
Indoor Rowing: Participants use rowing machines to simulate the action of rowing a boat.
Trampoline: Athletes perform acrobatic maneuvers on a trampoline, often as part of gymnastics routines.
Remember that this list is not exhaustive, as there are many other lesser-known indoor sports played regionally or for recreational purposes.