Singapore sweep

I could never quite understand the attraction of 4D, the officially sanctioned version or the illegal HDB-hawked version. Having 'Big' and Small' versions of the same draw is thoroughly confusing to the uninitiated.
Neither seemed to give great returns and I can but wonder how they are faring with the two casinos mopping up all the Uncles and Aunties' spare change?
In all my time in Singapore I only managed to recoup a couple of dollars; mind you I was rarely tempted to out money down in the first place.  The Singapore Sweepstake lottery also failed to spark my interest with a maximum prize of 2.2. million and odds that made winning almost impossible.
Not that Singapore Pools established in 1968 and who run these lotteries are missing out, as Sport betting is big business. Both football and motor racing attract the punters.
Singapore Pools reportedly (dated 2006) make $5 billion Singapore dollars per year but are parsimonious when it comes to give back to charities.  In its first 38 years of operation is only gave back $S1.6.billion. 
   Singapore sweep