Initially launched as a 5-out-of-49 game, TOTO has undergone several format changes to keep up with player interest and modern standards:

: Introduced the snowballing feature, which allows unclaimed jackpot prizes to carry over to subsequent draws. 1988 : Format changed to 6-out-of-42. 1997 : Format changed to 6-out-of-45.

If the jackpot (Group 1) is not won, the prize money "snowballs" (rolls over) to the next draw. This often leads to massive jackpots that attract significantly higher participation.

Investigation into the term "Spore Toto" within the context of Singaporean lottery systems and sports betting.

Players select 6 numbers from a pool of 1 to 49.