Scoring 100 points in a basketball game is one of the rarest accomplishments in all of sports; indeed, the feat has been done only a handful of times at all levels of competition.

While a highly individual achievement, scoring 100 points nevertheless requires cooperation both from the teammates to pass the ball to the player on virtually every possession and from the coach to allow him to stay on the floor. (Such games are invariably blowouts and leaving a star player on the floor in such circumstances is considered poor coaching etiquette.)

Marin Ferecevic (born 1992) a young cadet from KK Virovitica, scored 178 points on one single game. This unbelievable match between Virovitica and ABN Graminea was played in local U14 Croatian league and final result was 187-70.

Ferencevic scored 178 points, grabbed 22 rebounds and stole 16 balls.
From outside the 3-point arc he was shooting 9/14, for 2 points he shot 67/72 and from the free throw line a fantastic 17/18.

In the first quarter Ferencevic scored 34 pts, in thesecond 61 pts, in the third 55 pts and in then fibally in the fourth "only" 28 pts.

I went for a bit of a search about that and found out that the record of most points in a game belongs to the 13-year-old Swede Mats Wermelin, who in a regional tournament in the Stockholm region back in 1974 scored all his team's points – 272

Dražen Petrović, then playing for Zagreb, scored 112 points (shooting 40 for 60 from the floor) against SMELT Olimpija during a Yugoslavian League Game on October 10th, 1985

Wilt Chamberlain, on 2 March 1962, became the only person ever to score 100 points in an NBA game in a 169-147 victory for the Philadelphia Warriors against the New York Knicks in Hershey, Pennsylvania.